28407730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{218521}}^1$

素因数の和:218541

約数の個数: 16

約数和(自身を含む): 55067544

約数和(自身を除く): 26659814

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 218521, 437042, 1092605, 2185210, 2840773, 5681546, 14203865, 28407730]

約数ペア:

[(1, 28407730), (2, 14203865), (5, 5681546), (10, 2840773), (13, 2185210), (26, 1092605), (65, 437042), (130, 218521)]