387619640

素因数分解:

$2^3\times 5^1\times {\mathrm{9690491}}^1$

素因数の和:9690502

約数の個数: 16

約数和(自身を含む): 872144280

約数和(自身を除く): 484524640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9690491, 19380982, 38761964, 48452455, 77523928, 96904910, 193809820, 387619640]

約数ペア:

[(1, 387619640), (2, 193809820), (4, 96904910), (5, 77523928), (8, 48452455), (10, 38761964), (20, 19380982), (40, 9690491)]