20734760

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2017}}^1$

素因数の和:2285

約数の個数: 32

約数和(自身を含む): 46857960

約数和(自身を除く): 26123200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2017, 2056, 2570, 4034, 5140, 8068, 10085, 10280, 16136, 20170, 40340, 80680, 518369, 1036738, 2073476, 2591845, 4146952, 5183690, 10367380, 20734760]

約数ペア:

[(1, 20734760), (2, 10367380), (4, 5183690), (5, 4146952), (8, 2591845), (10, 2073476), (20, 1036738), (40, 518369), (257, 80680), (514, 40340), (1028, 20170), (1285, 16136), (2017, 10280), (2056, 10085), (2570, 8068), (4034, 5140)]