91872920

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 211701600

約数和(自身を除く): 119828680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 131, 178, 197, 262, 356, 394, 445, 524, 655, 712, 788, 890, 985, 1048, 1310, 1576, 1780, 1970, 2620, 3560, 3940, 5240, 7880, 11659, 17533, 23318, 25807, 35066, 46636, 51614, 58295, 70132, 87665, 93272, 103228, 116590, 129035, 140264, 175330, 206456, 233180, 258070, 350660, 466360, 516140, 701320, 1032280, 2296823, 4593646, 9187292, 11484115, 18374584, 22968230, 45936460, 91872920]

約数ペア:

[(1, 91872920), (2, 45936460), (4, 22968230), (5, 18374584), (8, 11484115), (10, 9187292), (20, 4593646), (40, 2296823), (89, 1032280), (131, 701320), (178, 516140), (197, 466360), (262, 350660), (356, 258070), (394, 233180), (445, 206456), (524, 175330), (655, 140264), (712, 129035), (788, 116590), (890, 103228), (985, 93272), (1048, 87665), (1310, 70132), (1576, 58295), (1780, 51614), (1970, 46636), (2620, 35066), (3560, 25807), (3940, 23318), (5240, 17533), (7880, 11659)]