21656270

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^2\times {\mathrm{347}}^1$

素因数の和:512

約数の個数: 24

約数和(自身を含む): 39594744

約数和(自身を除く): 17938474

約数列:

[1, 2, 5, 10, 79, 158, 347, 395, 694, 790, 1735, 3470, 6241, 12482, 27413, 31205, 54826, 62410, 137065, 274130, 2165627, 4331254, 10828135, 21656270]

約数ペア:

[(1, 21656270), (2, 10828135), (5, 4331254), (10, 2165627), (79, 274130), (158, 137065), (347, 62410), (395, 54826), (694, 31205), (790, 27413), (1735, 12482), (3470, 6241)]