20394550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3371}}^1$

素因数の和:3405

約数の個数: 36

約数和(自身を含む): 41708268

約数和(自身を除く): 21313718

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3371, 6050, 6742, 16855, 33710, 37081, 74162, 84275, 168550, 185405, 370810, 407891, 815782, 927025, 1854050, 2039455, 4078910, 10197275, 20394550]

約数ペア:

[(1, 20394550), (2, 10197275), (5, 4078910), (10, 2039455), (11, 1854050), (22, 927025), (25, 815782), (50, 407891), (55, 370810), (110, 185405), (121, 168550), (242, 84275), (275, 74162), (550, 37081), (605, 33710), (1210, 16855), (3025, 6742), (3371, 6050)]