21347570

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 39470976

約数和(自身を除く): 18123406

約数列:

[1, 2, 5, 10, 71, 107, 142, 214, 281, 355, 535, 562, 710, 1070, 1405, 2810, 7597, 15194, 19951, 30067, 37985, 39902, 60134, 75970, 99755, 150335, 199510, 300670, 2134757, 4269514, 10673785, 21347570]

約数ペア:

[(1, 21347570), (2, 10673785), (5, 4269514), (10, 2134757), (71, 300670), (107, 199510), (142, 150335), (214, 99755), (281, 75970), (355, 60134), (535, 39902), (562, 37985), (710, 30067), (1070, 19951), (1405, 15194), (2810, 7597)]