64979680

素因数分解:

$2^5\times 5^1\times {\mathrm{406123}}^1$

素因数の和:406138

約数の個数: 24

約数和(自身を含む): 153514872

約数和(自身を除く): 88535192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 406123, 812246, 1624492, 2030615, 3248984, 4061230, 6497968, 8122460, 12995936, 16244920, 32489840, 64979680]

約数ペア:

[(1, 64979680), (2, 32489840), (4, 16244920), (5, 12995936), (8, 8122460), (10, 6497968), (16, 4061230), (20, 3248984), (32, 2030615), (40, 1624492), (80, 812246), (160, 406123)]