20914850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3457}}^1$

素因数の和:3491

約数の個数: 36

約数和(自身を含む): 42772002

約数和(自身を除く): 21857152

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3457, 6050, 6914, 17285, 34570, 38027, 76054, 86425, 172850, 190135, 380270, 418297, 836594, 950675, 1901350, 2091485, 4182970, 10457425, 20914850]

約数ペア:

[(1, 20914850), (2, 10457425), (5, 4182970), (10, 2091485), (11, 1901350), (22, 950675), (25, 836594), (50, 418297), (55, 380270), (110, 190135), (121, 172850), (242, 86425), (275, 76054), (550, 38027), (605, 34570), (1210, 17285), (3025, 6914), (3457, 6050)]