39309680

素因数分解:

$2^4\times 5^1\times {\mathrm{491371}}^1$

素因数の和:491384

約数の個数: 20

約数和(自身を含む): 91395192

約数和(自身を除く): 52085512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491371, 982742, 1965484, 2456855, 3930968, 4913710, 7861936, 9827420, 19654840, 39309680]

約数ペア:

[(1, 39309680), (2, 19654840), (4, 9827420), (5, 7861936), (8, 4913710), (10, 3930968), (16, 2456855), (20, 1965484), (40, 982742), (80, 491371)]