20536040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1033}}^1$

素因数の和:1122

約数の個数: 64

約数和(自身を含む): 53602560

約数和(自身を除く): 33066520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1033, 1420, 1988, 2066, 2485, 2840, 3976, 4132, 4970, 5165, 7231, 8264, 9940, 10330, 14462, 19880, 20660, 28924, 36155, 41320, 57848, 72310, 73343, 144620, 146686, 289240, 293372, 366715, 513401, 586744, 733430, 1026802, 1466860, 2053604, 2567005, 2933720, 4107208, 5134010, 10268020, 20536040]

約数ペア:

[(1, 20536040), (2, 10268020), (4, 5134010), (5, 4107208), (7, 2933720), (8, 2567005), (10, 2053604), (14, 1466860), (20, 1026802), (28, 733430), (35, 586744), (40, 513401), (56, 366715), (70, 293372), (71, 289240), (140, 146686), (142, 144620), (280, 73343), (284, 72310), (355, 57848), (497, 41320), (568, 36155), (710, 28924), (994, 20660), (1033, 19880), (1420, 14462), (1988, 10330), (2066, 9940), (2485, 8264), (2840, 7231), (3976, 5165), (4132, 4970)]