21000948988

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1123}}^1\times {\mathrm{1129}}^1$

素因数の和:2398

約数の個数: 48

約数和(自身を含む): 38088358560

約数和(自身を除く): 17087409572

約数列:

[1, 2, 4, 41, 82, 101, 164, 202, 404, 1123, 1129, 2246, 2258, 4141, 4492, 4516, 8282, 16564, 46043, 46289, 92086, 92578, 113423, 114029, 184172, 185156, 226846, 228058, 453692, 456116, 1267867, 2535734, 4650343, 4675189, 5071468, 9300686, 9350378, 18601372, 18700756, 51982547, 103965094, 128054567, 207930188, 256109134, 512218268, 5250237247, 10500474494, 21000948988]

約数ペア:

[(1, 21000948988), (2, 10500474494), (4, 5250237247), (41, 512218268), (82, 256109134), (101, 207930188), (164, 128054567), (202, 103965094), (404, 51982547), (1123, 18700756), (1129, 18601372), (2246, 9350378), (2258, 9300686), (4141, 5071468), (4492, 4675189), (4516, 4650343), (8282, 2535734), (16564, 1267867), (46043, 456116), (46289, 453692), (92086, 228058), (92578, 226846), (113423, 185156), (114029, 184172)]