21204404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 20623564

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 103, 107, 148, 206, 214, 412, 428, 481, 962, 1339, 1391, 1924, 2678, 2782, 3811, 3959, 5356, 5564, 7622, 7918, 11021, 15244, 15836, 22042, 44084, 49543, 51467, 99086, 102934, 143273, 198172, 205868, 286546, 407777, 573092, 815554, 1631108, 5301101, 10602202, 21204404]

約数ペア:

[(1, 21204404), (2, 10602202), (4, 5301101), (13, 1631108), (26, 815554), (37, 573092), (52, 407777), (74, 286546), (103, 205868), (107, 198172), (148, 143273), (206, 102934), (214, 99086), (412, 51467), (428, 49543), (481, 44084), (962, 22042), (1339, 15836), (1391, 15244), (1924, 11021), (2678, 7918), (2782, 7622), (3811, 5564), (3959, 5356)]