20657980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147557}}^1$

素因数の和:147573

約数の個数: 24

約数和(自身を含む): 49579488

約数和(自身を除く): 28921508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147557, 295114, 590228, 737785, 1032899, 1475570, 2065798, 2951140, 4131596, 5164495, 10328990, 20657980]

約数ペア:

[(1, 20657980), (2, 10328990), (4, 5164495), (5, 4131596), (7, 2951140), (10, 2065798), (14, 1475570), (20, 1032899), (28, 737785), (35, 590228), (70, 295114), (140, 147557)]