65512981420

素因数分解:

$2^2\times 5^1\times {\mathrm{2609}}^1\times {\mathrm{1255519}}^1$

素因数の和:1258137

約数の個数: 24

約数和(自身を含む): 137630102400

約数和(自身を除く): 72117120980

約数列:

[1, 2, 4, 5, 10, 20, 2609, 5218, 10436, 13045, 26090, 52180, 1255519, 2511038, 5022076, 6277595, 12555190, 25110380, 3275649071, 6551298142, 13102596284, 16378245355, 32756490710, 65512981420]

約数ペア:

[(1, 65512981420), (2, 32756490710), (4, 16378245355), (5, 13102596284), (10, 6551298142), (20, 3275649071), (2609, 25110380), (5218, 12555190), (10436, 6277595), (13045, 5022076), (26090, 2511038), (52180, 1255519)]