21853670

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128551}}^1$

素因数の和:128575

約数の個数: 16

約数和(自身を含む): 41650848

約数和(自身を除く): 19797178

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128551, 257102, 642755, 1285510, 2185367, 4370734, 10926835, 21853670]

約数ペア:

[(1, 21853670), (2, 10926835), (5, 4370734), (10, 2185367), (17, 1285510), (34, 642755), (85, 257102), (170, 128551)]