21013730

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{479}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 18177310

約数列:

[1, 2, 5, 10, 41, 82, 107, 205, 214, 410, 479, 535, 958, 1070, 2395, 4387, 4790, 8774, 19639, 21935, 39278, 43870, 51253, 98195, 102506, 196390, 256265, 512530, 2101373, 4202746, 10506865, 21013730]

約数ペア:

[(1, 21013730), (2, 10506865), (5, 4202746), (10, 2101373), (41, 512530), (82, 256265), (107, 196390), (205, 102506), (214, 98195), (410, 51253), (479, 43870), (535, 39278), (958, 21935), (1070, 19639), (2395, 8774), (4387, 4790)]