90412420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{645803}}^1$

素因数の和:645819

約数の個数: 24

約数和(自身を含む): 216990144

約数和(自身を除く): 126577724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 645803, 1291606, 2583212, 3229015, 4520621, 6458030, 9041242, 12916060, 18082484, 22603105, 45206210, 90412420]

約数ペア:

[(1, 90412420), (2, 45206210), (4, 22603105), (5, 18082484), (7, 12916060), (10, 9041242), (14, 6458030), (20, 4520621), (28, 3229015), (35, 2583212), (70, 1291606), (140, 645803)]