18257890

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{5323}}^1$

素因数の和:5351

約数の個数: 32

約数和(自身を含む): 38332800

約数和(自身を除く): 20074910

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 5323, 10646, 26615, 37261, 53230, 74522, 186305, 260827, 372610, 521654, 1304135, 1825789, 2608270, 3651578, 9128945, 18257890]

約数ペア:

[(1, 18257890), (2, 9128945), (5, 3651578), (7, 2608270), (10, 1825789), (14, 1304135), (35, 521654), (49, 372610), (70, 260827), (98, 186305), (245, 74522), (343, 53230), (490, 37261), (686, 26615), (1715, 10646), (3430, 5323)]