21427688

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 41436360

約数和(自身を除く): 20008672

約数列:

[1, 2, 4, 8, 53, 97, 106, 194, 212, 388, 424, 521, 776, 1042, 2084, 4168, 5141, 10282, 20564, 27613, 41128, 50537, 55226, 101074, 110452, 202148, 220904, 404296, 2678461, 5356922, 10713844, 21427688]

約数ペア:

[(1, 21427688), (2, 10713844), (4, 5356922), (8, 2678461), (53, 404296), (97, 220904), (106, 202148), (194, 110452), (212, 101074), (388, 55226), (424, 50537), (521, 41128), (776, 27613), (1042, 20564), (2084, 10282), (4168, 5141)]