21489958880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{827}}^1$

素因数の和:930

約数の個数: 216

約数和(自身を含む): 56875139496

約数和(自身を除く): 35385180616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 260, 310, 338, 403, 416, 496, 520, 620, 676, 806, 827, 845, 961, 992, 1040, 1240, 1352, 1612, 1654, 1690, 1922, 2015, 2080, 2480, 2704, 3224, 3308, 3380, 3844, 4030, 4135, 4805, 4960, 5239, 5408, 6448, 6616, 6760, 7688, 8060, 8270, 9610, 10478, 10751, 12493, 12896, 13232, 13520, 15376, 16120, 16540, 19220, 20956, 21502, 24986, 25637, 26195, 26464, 27040, 30752, 32240, 33080, 38440, 41912, 43004, 49972, 51274, 52390, 53755, 62465, 64480, 66160, 76880, 83824, 86008, 99944, 102548, 104780, 107510, 124930, 128185, 132320, 139763, 153760, 162409, 167648, 172016, 199888, 205096, 209560, 215020, 249860, 256370, 279526, 324818, 333281, 344032, 399776, 410192, 419120, 430040, 499720, 512740, 559052, 649636, 666562, 698815, 794747, 812045, 820384, 838240, 860080, 999440, 1025480, 1118104, 1299272, 1333124, 1397630, 1589494, 1624090, 1666405, 1720160, 1998880, 2050960, 2236208, 2598544, 2666248, 2795260, 3178988, 3248180, 3332810, 3973735, 4101920, 4332653, 4472416, 5197088, 5332496, 5590520, 6357976, 6496360, 6665620, 7947470, 8665306, 10331711, 10664992, 11181040, 12715952, 12992720, 13331240, 15894940, 17330612, 20663422, 21663265, 22362080, 25431904, 25985440, 26662480, 31789880, 34661224, 41326844, 43326530, 51658555, 53324960, 63579760, 69322448, 82653688, 86653060, 103317110, 127159520, 134312243, 138644896, 165307376, 173306120, 206634220, 268624486, 330614752, 346612240, 413268440, 537248972, 671561215, 693224480, 826536880, 1074497944, 1343122430, 1653073760, 2148995888, 2686244860, 4297991776, 5372489720, 10744979440, 21489958880]

約数ペア:

[(1, 21489958880), (2, 10744979440), (4, 5372489720), (5, 4297991776), (8, 2686244860), (10, 2148995888), (13, 1653073760), (16, 1343122430), (20, 1074497944), (26, 826536880), (31, 693224480), (32, 671561215), (40, 537248972), (52, 413268440), (62, 346612240), (65, 330614752), (80, 268624486), (104, 206634220), (124, 173306120), (130, 165307376), (155, 138644896), (160, 134312243), (169, 127159520), (208, 103317110), (248, 86653060), (260, 82653688), (310, 69322448), (338, 63579760), (403, 53324960), (416, 51658555), (496, 43326530), (520, 41326844), (620, 34661224), (676, 31789880), (806, 26662480), (827, 25985440), (845, 25431904), (961, 22362080), (992, 21663265), (1040, 20663422), (1240, 17330612), (1352, 15894940), (1612, 13331240), (1654, 12992720), (1690, 12715952), (1922, 11181040), (2015, 10664992), (2080, 10331711), (2480, 8665306), (2704, 7947470), (3224, 6665620), (3308, 6496360), (3380, 6357976), (3844, 5590520), (4030, 5332496), (4135, 5197088), (4805, 4472416), (4960, 4332653), (5239, 4101920), (5408, 3973735), (6448, 3332810), (6616, 3248180), (6760, 3178988), (7688, 2795260), (8060, 2666248), (8270, 2598544), (9610, 2236208), (10478, 2050960), (10751, 1998880), (12493, 1720160), (12896, 1666405), (13232, 1624090), (13520, 1589494), (15376, 1397630), (16120, 1333124), (16540, 1299272), (19220, 1118104), (20956, 1025480), (21502, 999440), (24986, 860080), (25637, 838240), (26195, 820384), (26464, 812045), (27040, 794747), (30752, 698815), (32240, 666562), (33080, 649636), (38440, 559052), (41912, 512740), (43004, 499720), (49972, 430040), (51274, 419120), (52390, 410192), (53755, 399776), (62465, 344032), (64480, 333281), (66160, 324818), (76880, 279526), (83824, 256370), (86008, 249860), (99944, 215020), (102548, 209560), (104780, 205096), (107510, 199888), (124930, 172016), (128185, 167648), (132320, 162409), (139763, 153760)]