491189680

素因数分解:

$2^4\times 5^1\times {\mathrm{6139871}}^1$

素因数の和:6139884

約数の個数: 20

約数和(自身を含む): 1142016192

約数和(自身を除く): 650826512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6139871, 12279742, 24559484, 30699355, 49118968, 61398710, 98237936, 122797420, 245594840, 491189680]

約数ペア:

[(1, 491189680), (2, 245594840), (4, 122797420), (5, 98237936), (8, 61398710), (10, 49118968), (16, 30699355), (20, 24559484), (40, 12279742), (80, 6139871)]