81701880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{631}}^1$

素因数の和:741

約数の個数: 128

約数和(自身を含む): 267563520

約数和(自身を除く): 185861640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 83, 104, 120, 130, 156, 166, 195, 249, 260, 312, 332, 390, 415, 498, 520, 631, 664, 780, 830, 996, 1079, 1245, 1262, 1560, 1660, 1893, 1992, 2158, 2490, 2524, 3155, 3237, 3320, 3786, 4316, 4980, 5048, 5395, 6310, 6474, 7572, 8203, 8632, 9465, 9960, 10790, 12620, 12948, 15144, 16185, 16406, 18930, 21580, 24609, 25240, 25896, 32370, 32812, 37860, 41015, 43160, 49218, 52373, 64740, 65624, 75720, 82030, 98436, 104746, 123045, 129480, 157119, 164060, 196872, 209492, 246090, 261865, 314238, 328120, 418984, 492180, 523730, 628476, 680849, 785595, 984360, 1047460, 1256952, 1361698, 1571190, 2042547, 2094920, 2723396, 3142380, 3404245, 4085094, 5446792, 6284760, 6808490, 8170188, 10212735, 13616980, 16340376, 20425470, 27233960, 40850940, 81701880]

約数ペア:

[(1, 81701880), (2, 40850940), (3, 27233960), (4, 20425470), (5, 16340376), (6, 13616980), (8, 10212735), (10, 8170188), (12, 6808490), (13, 6284760), (15, 5446792), (20, 4085094), (24, 3404245), (26, 3142380), (30, 2723396), (39, 2094920), (40, 2042547), (52, 1571190), (60, 1361698), (65, 1256952), (78, 1047460), (83, 984360), (104, 785595), (120, 680849), (130, 628476), (156, 523730), (166, 492180), (195, 418984), (249, 328120), (260, 314238), (312, 261865), (332, 246090), (390, 209492), (415, 196872), (498, 164060), (520, 157119), (631, 129480), (664, 123045), (780, 104746), (830, 98436), (996, 82030), (1079, 75720), (1245, 65624), (1262, 64740), (1560, 52373), (1660, 49218), (1893, 43160), (1992, 41015), (2158, 37860), (2490, 32812), (2524, 32370), (3155, 25896), (3237, 25240), (3320, 24609), (3786, 21580), (4316, 18930), (4980, 16406), (5048, 16185), (5395, 15144), (6310, 12948), (6474, 12620), (7572, 10790), (8203, 9960), (8632, 9465)]