87515840

素因数分解:

$2^6\times 5^1\times {\mathrm{491}}^1\times {\mathrm{557}}^1$

素因数の和:1065

約数の個数: 56

約数和(自身を含む): 209196432

約数和(自身を除く): 121680592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 491, 557, 982, 1114, 1964, 2228, 2455, 2785, 3928, 4456, 4910, 5570, 7856, 8912, 9820, 11140, 15712, 17824, 19640, 22280, 31424, 35648, 39280, 44560, 78560, 89120, 157120, 178240, 273487, 546974, 1093948, 1367435, 2187896, 2734870, 4375792, 5469740, 8751584, 10939480, 17503168, 21878960, 43757920, 87515840]

約数ペア:

[(1, 87515840), (2, 43757920), (4, 21878960), (5, 17503168), (8, 10939480), (10, 8751584), (16, 5469740), (20, 4375792), (32, 2734870), (40, 2187896), (64, 1367435), (80, 1093948), (160, 546974), (320, 273487), (491, 178240), (557, 157120), (982, 89120), (1114, 78560), (1964, 44560), (2228, 39280), (2455, 35648), (2785, 31424), (3928, 22280), (4456, 19640), (4910, 17824), (5570, 15712), (7856, 11140), (8912, 9820)]