21459892

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 20029388

約数列:

[1, 2, 4, 19, 38, 41, 71, 76, 82, 97, 142, 164, 194, 284, 388, 779, 1349, 1558, 1843, 2698, 2911, 3116, 3686, 3977, 5396, 5822, 6887, 7372, 7954, 11644, 13774, 15908, 27548, 55309, 75563, 110618, 130853, 151126, 221236, 261706, 282367, 302252, 523412, 564734, 1129468, 5364973, 10729946, 21459892]

約数ペア:

[(1, 21459892), (2, 10729946), (4, 5364973), (19, 1129468), (38, 564734), (41, 523412), (71, 302252), (76, 282367), (82, 261706), (97, 221236), (142, 151126), (164, 130853), (194, 110618), (284, 75563), (388, 55309), (779, 27548), (1349, 15908), (1558, 13774), (1843, 11644), (2698, 7954), (2911, 7372), (3116, 6887), (3686, 5822), (3977, 5396)]