21346520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41051}}^1$

素因数の和:41075

約数の個数: 32

約数和(自身を含む): 51725520

約数和(自身を除く): 30379000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41051, 82102, 164204, 205255, 328408, 410510, 533663, 821020, 1067326, 1642040, 2134652, 2668315, 4269304, 5336630, 10673260, 21346520]

約数ペア:

[(1, 21346520), (2, 10673260), (4, 5336630), (5, 4269304), (8, 2668315), (10, 2134652), (13, 1642040), (20, 1067326), (26, 821020), (40, 533663), (52, 410510), (65, 328408), (104, 205255), (130, 164204), (260, 82102), (520, 41051)]