19913990

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{17623}}^1$

素因数の和:17743

約数の個数: 16

約数和(自身を含む): 36164448

約数和(自身を除く): 16250458

約数列:

[1, 2, 5, 10, 113, 226, 565, 1130, 17623, 35246, 88115, 176230, 1991399, 3982798, 9956995, 19913990]

約数ペア:

[(1, 19913990), (2, 9956995), (5, 3982798), (10, 1991399), (113, 176230), (226, 88115), (565, 35246), (1130, 17623)]