21722450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 42586560

約数和(自身を除く): 20864110

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 71, 142, 145, 211, 290, 355, 422, 710, 725, 1055, 1450, 1775, 2059, 2110, 3550, 4118, 5275, 6119, 10295, 10550, 12238, 14981, 20590, 29962, 30595, 51475, 61190, 74905, 102950, 149810, 152975, 305950, 374525, 434449, 749050, 868898, 2172245, 4344490, 10861225, 21722450]

約数ペア:

[(1, 21722450), (2, 10861225), (5, 4344490), (10, 2172245), (25, 868898), (29, 749050), (50, 434449), (58, 374525), (71, 305950), (142, 152975), (145, 149810), (211, 102950), (290, 74905), (355, 61190), (422, 51475), (710, 30595), (725, 29962), (1055, 20590), (1450, 14981), (1775, 12238), (2059, 10550), (2110, 10295), (3550, 6119), (4118, 5275)]