31331560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{677}}^1$

素因数の和:790

約数の個数: 64

約数和(自身を含む): 76885200

約数和(自身を除く): 45553640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 89, 104, 130, 178, 260, 356, 445, 520, 677, 712, 890, 1157, 1354, 1780, 2314, 2708, 3385, 3560, 4628, 5416, 5785, 6770, 8801, 9256, 11570, 13540, 17602, 23140, 27080, 35204, 44005, 46280, 60253, 70408, 88010, 120506, 176020, 241012, 301265, 352040, 482024, 602530, 783289, 1205060, 1566578, 2410120, 3133156, 3916445, 6266312, 7832890, 15665780, 31331560]

約数ペア:

[(1, 31331560), (2, 15665780), (4, 7832890), (5, 6266312), (8, 3916445), (10, 3133156), (13, 2410120), (20, 1566578), (26, 1205060), (40, 783289), (52, 602530), (65, 482024), (89, 352040), (104, 301265), (130, 241012), (178, 176020), (260, 120506), (356, 88010), (445, 70408), (520, 60253), (677, 46280), (712, 44005), (890, 35204), (1157, 27080), (1354, 23140), (1780, 17602), (2314, 13540), (2708, 11570), (3385, 9256), (3560, 8801), (4628, 6770), (5416, 5785)]