20389660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53657}}^1$

素因数の和:53685

約数の個数: 24

約数和(自身を含む): 45072720

約数和(自身を除く): 24683060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 53657, 107314, 214628, 268285, 536570, 1019483, 1073140, 2038966, 4077932, 5097415, 10194830, 20389660]

約数ペア:

[(1, 20389660), (2, 10194830), (4, 5097415), (5, 4077932), (10, 2038966), (19, 1073140), (20, 1019483), (38, 536570), (76, 268285), (95, 214628), (190, 107314), (380, 53657)]