64483960

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8101}}^1$

素因数の和:8311

約数の個数: 32

約数和(自身を含む): 145836000

約数和(自身を除く): 81352040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 8101, 16202, 32404, 40505, 64808, 81010, 162020, 324040, 1612099, 3224198, 6448396, 8060495, 12896792, 16120990, 32241980, 64483960]

約数ペア:

[(1, 64483960), (2, 32241980), (4, 16120990), (5, 12896792), (8, 8060495), (10, 6448396), (20, 3224198), (40, 1612099), (199, 324040), (398, 162020), (796, 81010), (995, 64808), (1592, 40505), (1990, 32404), (3980, 16202), (7960, 8101)]