210002990420

素因数分解:

$2^2\times 5^1\times {\mathrm{10500149521}}^1$

素因数の和:10500149530

約数の個数: 12

約数和(自身を含む): 441006279924

約数和(自身を除く): 231003289504

約数列:

[1, 2, 4, 5, 10, 20, 10500149521, 21000299042, 42000598084, 52500747605, 105001495210, 210002990420]

約数ペア:

[(1, 210002990420), (2, 105001495210), (4, 52500747605), (5, 42000598084), (10, 21000299042), (20, 10500149521)]