18875420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{17807}}^1$

素因数の和:17869

約数の個数: 24

約数和(自身を含む): 40388544

約数和(自身を除く): 21513124

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 17807, 35614, 71228, 89035, 178070, 356140, 943771, 1887542, 3775084, 4718855, 9437710, 18875420]

約数ペア:

[(1, 18875420), (2, 9437710), (4, 4718855), (5, 3775084), (10, 1887542), (20, 943771), (53, 356140), (106, 178070), (212, 89035), (265, 71228), (530, 35614), (1060, 17807)]