805548640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^3$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 2129452416

約数和(自身を除く): 1323903776

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, 845, 961, 992, 1040, 1240, 1352, 1612, 1690, 1922, 2015, 2080, 2480, 2704, 3224, 3380, 3844, 4030, 4805, 4960, 5239, 5408, 6448, 6760, 7688, 8060, 9610, 10478, 12493, 12896, 13520, 15376, 16120, 19220, 20956, 24986, 26195, 27040, 29791, 30752, 32240, 38440, 41912, 49972, 52390, 59582, 62465, 64480, 76880, 83824, 99944, 104780, 119164, 124930, 148955, 153760, 162409, 167648, 199888, 209560, 238328, 249860, 297910, 324818, 387283, 399776, 419120, 476656, 499720, 595820, 649636, 774566, 812045, 838240, 953312, 999440, 1191640, 1299272, 1549132, 1624090, 1936415, 1998880, 2383280, 2598544, 3098264, 3248180, 3872830, 4766560, 5034679, 5197088, 6196528, 6496360, 7745660, 10069358, 12393056, 12992720, 15491320, 20138716, 25173395, 25985440, 30982640, 40277432, 50346790, 61965280, 80554864, 100693580, 161109728, 201387160, 402774320, 805548640]

約数ペア:

[(1, 805548640), (2, 402774320), (4, 201387160), (5, 161109728), (8, 100693580), (10, 80554864), (13, 61965280), (16, 50346790), (20, 40277432), (26, 30982640), (31, 25985440), (32, 25173395), (40, 20138716), (52, 15491320), (62, 12992720), (65, 12393056), (80, 10069358), (104, 7745660), (124, 6496360), (130, 6196528), (155, 5197088), (160, 5034679), (169, 4766560), (208, 3872830), (248, 3248180), (260, 3098264), (310, 2598544), (338, 2383280), (403, 1998880), (416, 1936415), (496, 1624090), (520, 1549132), (620, 1299272), (676, 1191640), (806, 999440), (845, 953312), (961, 838240), (992, 812045), (1040, 774566), (1240, 649636), (1352, 595820), (1612, 499720), (1690, 476656), (1922, 419120), (2015, 399776), (2080, 387283), (2480, 324818), (2704, 297910), (3224, 249860), (3380, 238328), (3844, 209560), (4030, 199888), (4805, 167648), (4960, 162409), (5239, 153760), (5408, 148955), (6448, 124930), (6760, 119164), (7688, 104780), (8060, 99944), (9610, 83824), (10478, 76880), (12493, 64480), (12896, 62465), (13520, 59582), (15376, 52390), (16120, 49972), (19220, 41912), (20956, 38440), (24986, 32240), (26195, 30752), (27040, 29791)]