21490100

素因数分解:

$2^2\times 5^2\times {\mathrm{311}}^1\times {\mathrm{691}}^1$

素因数の和:1016

約数の個数: 36

約数和(自身を含む): 46851168

約数和(自身を除く): 25361068

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 311, 622, 691, 1244, 1382, 1555, 2764, 3110, 3455, 6220, 6910, 7775, 13820, 15550, 17275, 31100, 34550, 69100, 214901, 429802, 859604, 1074505, 2149010, 4298020, 5372525, 10745050, 21490100]

約数ペア:

[(1, 21490100), (2, 10745050), (4, 5372525), (5, 4298020), (10, 2149010), (20, 1074505), (25, 859604), (50, 429802), (100, 214901), (311, 69100), (622, 34550), (691, 31100), (1244, 17275), (1382, 15550), (1555, 13820), (2764, 7775), (3110, 6910), (3455, 6220)]