19556020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8081}}^1$

素因数の和:8112

約数の個数: 36

約数和(自身を含む): 45146052

約数和(自身を除く): 25590032

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8081, 16162, 32324, 40405, 80810, 88891, 161620, 177782, 355564, 444455, 888910, 977801, 1777820, 1955602, 3911204, 4889005, 9778010, 19556020]

約数ペア:

[(1, 19556020), (2, 9778010), (4, 4889005), (5, 3911204), (10, 1955602), (11, 1777820), (20, 977801), (22, 888910), (44, 444455), (55, 355564), (110, 177782), (121, 161620), (220, 88891), (242, 80810), (484, 40405), (605, 32324), (1210, 16162), (2420, 8081)]