81487920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1291}}^1$

素因数の和:1570

約数の個数: 80

約数和(自身を含む): 253769472

約数和(自身を除く): 172281552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 263, 526, 789, 1052, 1291, 1315, 1578, 2104, 2582, 2630, 3156, 3873, 3945, 4208, 5164, 5260, 6312, 6455, 7746, 7890, 10328, 10520, 12624, 12910, 15492, 15780, 19365, 20656, 21040, 25820, 30984, 31560, 38730, 51640, 61968, 63120, 77460, 103280, 154920, 309840, 339533, 679066, 1018599, 1358132, 1697665, 2037198, 2716264, 3395330, 4074396, 5092995, 5432528, 6790660, 8148792, 10185990, 13581320, 16297584, 20371980, 27162640, 40743960, 81487920]

約数ペア:

[(1, 81487920), (2, 40743960), (3, 27162640), (4, 20371980), (5, 16297584), (6, 13581320), (8, 10185990), (10, 8148792), (12, 6790660), (15, 5432528), (16, 5092995), (20, 4074396), (24, 3395330), (30, 2716264), (40, 2037198), (48, 1697665), (60, 1358132), (80, 1018599), (120, 679066), (240, 339533), (263, 309840), (526, 154920), (789, 103280), (1052, 77460), (1291, 63120), (1315, 61968), (1578, 51640), (2104, 38730), (2582, 31560), (2630, 30984), (3156, 25820), (3873, 21040), (3945, 20656), (4208, 19365), (5164, 15780), (5260, 15492), (6312, 12910), (6455, 12624), (7746, 10520), (7890, 10328)]