20819334640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:688

約数の個数: 240

約数和(自身を含む): 55418265504

約数和(自身を除く): 34598930864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 37, 40, 52, 62, 65, 74, 80, 104, 124, 130, 148, 155, 185, 208, 248, 260, 296, 310, 370, 403, 481, 496, 520, 563, 592, 620, 740, 806, 961, 962, 1040, 1126, 1147, 1240, 1480, 1612, 1922, 1924, 2015, 2252, 2294, 2405, 2480, 2815, 2960, 3224, 3844, 3848, 4030, 4504, 4588, 4805, 4810, 5630, 5735, 6448, 7319, 7688, 7696, 8060, 9008, 9176, 9610, 9620, 11260, 11470, 12493, 14638, 14911, 15376, 16120, 17453, 18352, 19220, 19240, 20831, 22520, 22940, 24986, 29276, 29822, 32240, 34906, 35557, 36595, 38440, 38480, 41662, 45040, 45880, 49972, 58552, 59644, 62465, 69812, 71114, 73190, 74555, 76880, 83324, 87265, 91760, 99944, 104155, 117104, 119288, 124930, 139624, 142228, 146380, 149110, 166648, 174530, 177785, 199888, 208310, 226889, 238576, 249860, 270803, 279248, 284456, 292760, 298220, 333296, 349060, 355570, 416620, 453778, 462241, 499720, 541043, 541606, 568912, 585520, 596440, 645761, 698120, 711140, 833240, 907556, 924482, 999440, 1082086, 1083212, 1134445, 1192880, 1291522, 1354015, 1396240, 1422280, 1666480, 1815112, 1848964, 2164172, 2166424, 2268890, 2311205, 2583044, 2705215, 2708030, 2844560, 3228805, 3630224, 3697928, 4328344, 4332848, 4537780, 4622410, 5166088, 5410430, 5416060, 6457610, 7033559, 7395856, 8394893, 8656688, 9075560, 9244820, 10332176, 10820860, 10832120, 12915220, 14067118, 16789786, 18151120, 18489640, 20018591, 21641720, 21664240, 25830440, 28134236, 33579572, 35167795, 36979280, 40037182, 41974465, 43283440, 51660880, 56268472, 67159144, 70335590, 80074364, 83948930, 100092955, 112536944, 134318288, 140671180, 160148728, 167897860, 200185910, 260241683, 281342360, 320297456, 335795720, 400371820, 520483366, 562684720, 671591440, 800743640, 1040966732, 1301208415, 1601487280, 2081933464, 2602416830, 4163866928, 5204833660, 10409667320, 20819334640]

約数ペア:

[(1, 20819334640), (2, 10409667320), (4, 5204833660), (5, 4163866928), (8, 2602416830), (10, 2081933464), (13, 1601487280), (16, 1301208415), (20, 1040966732), (26, 800743640), (31, 671591440), (37, 562684720), (40, 520483366), (52, 400371820), (62, 335795720), (65, 320297456), (74, 281342360), (80, 260241683), (104, 200185910), (124, 167897860), (130, 160148728), (148, 140671180), (155, 134318288), (185, 112536944), (208, 100092955), (248, 83948930), (260, 80074364), (296, 70335590), (310, 67159144), (370, 56268472), (403, 51660880), (481, 43283440), (496, 41974465), (520, 40037182), (563, 36979280), (592, 35167795), (620, 33579572), (740, 28134236), (806, 25830440), (961, 21664240), (962, 21641720), (1040, 20018591), (1126, 18489640), (1147, 18151120), (1240, 16789786), (1480, 14067118), (1612, 12915220), (1922, 10832120), (1924, 10820860), (2015, 10332176), (2252, 9244820), (2294, 9075560), (2405, 8656688), (2480, 8394893), (2815, 7395856), (2960, 7033559), (3224, 6457610), (3844, 5416060), (3848, 5410430), (4030, 5166088), (4504, 4622410), (4588, 4537780), (4805, 4332848), (4810, 4328344), (5630, 3697928), (5735, 3630224), (6448, 3228805), (7319, 2844560), (7688, 2708030), (7696, 2705215), (8060, 2583044), (9008, 2311205), (9176, 2268890), (9610, 2166424), (9620, 2164172), (11260, 1848964), (11470, 1815112), (12493, 1666480), (14638, 1422280), (14911, 1396240), (15376, 1354015), (16120, 1291522), (17453, 1192880), (18352, 1134445), (19220, 1083212), (19240, 1082086), (20831, 999440), (22520, 924482), (22940, 907556), (24986, 833240), (29276, 711140), (29822, 698120), (32240, 645761), (34906, 596440), (35557, 585520), (36595, 568912), (38440, 541606), (38480, 541043), (41662, 499720), (45040, 462241), (45880, 453778), (49972, 416620), (58552, 355570), (59644, 349060), (62465, 333296), (69812, 298220), (71114, 292760), (73190, 284456), (74555, 279248), (76880, 270803), (83324, 249860), (87265, 238576), (91760, 226889), (99944, 208310), (104155, 199888), (117104, 177785), (119288, 174530), (124930, 166648), (139624, 149110), (142228, 146380)]