21252890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125017}}^1$

素因数の和:125041

約数の個数: 16

約数和(自身を含む): 40505832

約数和(自身を除く): 19252942

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125017, 250034, 625085, 1250170, 2125289, 4250578, 10626445, 21252890]

約数ペア:

[(1, 21252890), (2, 10626445), (5, 4250578), (10, 2125289), (17, 1250170), (34, 625085), (85, 250034), (170, 125017)]