31320880

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 75932640

約数和(自身を除く): 44611760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 83, 89, 106, 166, 178, 212, 265, 332, 356, 415, 424, 445, 530, 664, 712, 830, 848, 890, 1060, 1328, 1424, 1660, 1780, 2120, 3320, 3560, 4240, 4399, 4717, 6640, 7120, 7387, 8798, 9434, 14774, 17596, 18868, 21995, 23585, 29548, 35192, 36935, 37736, 43990, 47170, 59096, 70384, 73870, 75472, 87980, 94340, 118192, 147740, 175960, 188680, 295480, 351920, 377360, 391511, 590960, 783022, 1566044, 1957555, 3132088, 3915110, 6264176, 7830220, 15660440, 31320880]

約数ペア:

[(1, 31320880), (2, 15660440), (4, 7830220), (5, 6264176), (8, 3915110), (10, 3132088), (16, 1957555), (20, 1566044), (40, 783022), (53, 590960), (80, 391511), (83, 377360), (89, 351920), (106, 295480), (166, 188680), (178, 175960), (212, 147740), (265, 118192), (332, 94340), (356, 87980), (415, 75472), (424, 73870), (445, 70384), (530, 59096), (664, 47170), (712, 43990), (830, 37736), (848, 36935), (890, 35192), (1060, 29548), (1328, 23585), (1424, 21995), (1660, 18868), (1780, 17596), (2120, 14774), (3320, 9434), (3560, 8798), (4240, 7387), (4399, 7120), (4717, 6640)]