20957601

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 33175296

約数和(自身を除く): 12217695

約数列:

[1, 3, 7, 21, 41, 101, 123, 241, 287, 303, 707, 723, 861, 1687, 2121, 4141, 5061, 9881, 12423, 24341, 28987, 29643, 69167, 73023, 86961, 170387, 207501, 511161, 997981, 2993943, 6985867, 20957601]

約数ペア:

[(1, 20957601), (3, 6985867), (7, 2993943), (21, 997981), (41, 511161), (101, 207501), (123, 170387), (241, 86961), (287, 73023), (303, 69167), (707, 29643), (723, 28987), (861, 24341), (1687, 12423), (2121, 9881), (4141, 5061)]