28795240

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5179}}^1$

素因数の和:5329

約数の個数: 32

約数和(自身を含む): 65268000

約数和(自身を除く): 36472760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5179, 5560, 10358, 20716, 25895, 41432, 51790, 103580, 207160, 719881, 1439762, 2879524, 3599405, 5759048, 7198810, 14397620, 28795240]

約数ペア:

[(1, 28795240), (2, 14397620), (4, 7198810), (5, 5759048), (8, 3599405), (10, 2879524), (20, 1439762), (40, 719881), (139, 207160), (278, 103580), (556, 51790), (695, 41432), (1112, 25895), (1390, 20716), (2780, 10358), (5179, 5560)]