21013564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2161}}^1$

素因数の和:2206

約数の個数: 48

約数和(自身を含む): 45765216

約数和(自身を除く): 24751652

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 187, 221, 286, 374, 442, 572, 748, 884, 2161, 2431, 4322, 4862, 8644, 9724, 23771, 28093, 36737, 47542, 56186, 73474, 95084, 112372, 146948, 309023, 404107, 477581, 618046, 808214, 955162, 1236092, 1616428, 1910324, 5253391, 10506782, 21013564]

約数ペア:

[(1, 21013564), (2, 10506782), (4, 5253391), (11, 1910324), (13, 1616428), (17, 1236092), (22, 955162), (26, 808214), (34, 618046), (44, 477581), (52, 404107), (68, 309023), (143, 146948), (187, 112372), (221, 95084), (286, 73474), (374, 56186), (442, 47542), (572, 36737), (748, 28093), (884, 23771), (2161, 9724), (2431, 8644), (4322, 4862)]