21658615

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12703}}^1$

素因数の和:12750

約数の個数: 16

約数和(自身を含む): 29270016

約数和(自身を除く): 7611401

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12703, 63515, 139733, 393793, 698665, 1968965, 4331723, 21658615]

約数ペア:

[(1, 21658615), (5, 4331723), (11, 1968965), (31, 698665), (55, 393793), (155, 139733), (341, 63515), (1705, 12703)]