28220530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{217081}}^1$

素因数の和:217101

約数の個数: 16

約数和(自身を含む): 54704664

約数和(自身を除く): 26484134

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 217081, 434162, 1085405, 2170810, 2822053, 5644106, 14110265, 28220530]

約数ペア:

[(1, 28220530), (2, 14110265), (5, 5644106), (10, 2822053), (13, 2170810), (26, 1085405), (65, 434162), (130, 217081)]