213486520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{410551}}^1$

素因数の和:410575

約数の個数: 32

約数和(自身を含む): 517295520

約数和(自身を除く): 303809000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 410551, 821102, 1642204, 2052755, 3284408, 4105510, 5337163, 8211020, 10674326, 16422040, 21348652, 26685815, 42697304, 53371630, 106743260, 213486520]

約数ペア:

[(1, 213486520), (2, 106743260), (4, 53371630), (5, 42697304), (8, 26685815), (10, 21348652), (13, 16422040), (20, 10674326), (26, 8211020), (40, 5337163), (52, 4105510), (65, 3284408), (104, 2052755), (130, 1642204), (260, 821102), (520, 410551)]