64793240

素因数分解:

$2^3\times 5^1\times {\mathrm{1619831}}^1$

素因数の和:1619842

約数の個数: 16

約数和(自身を含む): 145784880

約数和(自身を除く): 80991640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1619831, 3239662, 6479324, 8099155, 12958648, 16198310, 32396620, 64793240]

約数ペア:

[(1, 64793240), (2, 32396620), (4, 16198310), (5, 12958648), (8, 8099155), (10, 6479324), (20, 3239662), (40, 1619831)]