20129398

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{1321}}^1$

素因数の和:1743

約数の個数: 16

約数和(自身を含む): 31886640

約数和(自身を除く): 11757242

約数列:

[1, 2, 19, 38, 401, 802, 1321, 2642, 7619, 15238, 25099, 50198, 529721, 1059442, 10064699, 20129398]

約数ペア:

[(1, 20129398), (2, 10064699), (19, 1059442), (38, 529721), (401, 50198), (802, 25099), (1321, 15238), (2642, 7619)]