21081716

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{1151}}^1$

素因数の和:1415

約数の個数: 24

約数和(自身を含む): 39029760

約数和(自身を除く): 17948044

約数列:

[1, 2, 4, 19, 38, 76, 241, 482, 964, 1151, 2302, 4579, 4604, 9158, 18316, 21869, 43738, 87476, 277391, 554782, 1109564, 5270429, 10540858, 21081716]

約数ペア:

[(1, 21081716), (2, 10540858), (4, 5270429), (19, 1109564), (38, 554782), (76, 277391), (241, 87476), (482, 43738), (964, 21869), (1151, 18316), (2302, 9158), (4579, 4604)]