72909680

素因数分解:

$2^4\times 5^1\times {\mathrm{911371}}^1$

素因数の和:911384

約数の個数: 20

約数和(自身を含む): 169515192

約数和(自身を除く): 96605512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 911371, 1822742, 3645484, 4556855, 7290968, 9113710, 14581936, 18227420, 36454840, 72909680]

約数ペア:

[(1, 72909680), (2, 36454840), (4, 18227420), (5, 14581936), (8, 9113710), (10, 7290968), (16, 4556855), (20, 3645484), (40, 1822742), (80, 911371)]