21897608

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{661}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 42540120

約数和(自身を除く): 20642512

約数列:

[1, 2, 4, 8, 41, 82, 101, 164, 202, 328, 404, 661, 808, 1322, 2644, 4141, 5288, 8282, 16564, 27101, 33128, 54202, 66761, 108404, 133522, 216808, 267044, 534088, 2737201, 5474402, 10948804, 21897608]

約数ペア:

[(1, 21897608), (2, 10948804), (4, 5474402), (8, 2737201), (41, 534088), (82, 267044), (101, 216808), (164, 133522), (202, 108404), (328, 66761), (404, 54202), (661, 33128), (808, 27101), (1322, 16564), (2644, 8282), (4141, 5288)]