18989620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73037}}^1$

素因数の和:73059

約数の個数: 24

約数和(自身を含む): 42946344

約数和(自身を除く): 23956724

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 73037, 146074, 292148, 365185, 730370, 949481, 1460740, 1898962, 3797924, 4747405, 9494810, 18989620]

約数ペア:

[(1, 18989620), (2, 9494810), (4, 4747405), (5, 3797924), (10, 1898962), (13, 1460740), (20, 949481), (26, 730370), (52, 365185), (65, 292148), (130, 146074), (260, 73037)]