17899820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11329}}^1$

素因数の和:11417

約数の個数: 24

約数和(自身を含む): 38068800

約数和(自身を除く): 20168980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11329, 22658, 45316, 56645, 113290, 226580, 894991, 1789982, 3579964, 4474955, 8949910, 17899820]

約数ペア:

[(1, 17899820), (2, 8949910), (4, 4474955), (5, 3579964), (10, 1789982), (20, 894991), (79, 226580), (158, 113290), (316, 56645), (395, 45316), (790, 22658), (1580, 11329)]