19490020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88591}}^1$

素因数の和:88611

約数の個数: 24

約数和(自身を含む): 44650368

約数和(自身を除く): 25160348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88591, 177182, 354364, 442955, 885910, 974501, 1771820, 1949002, 3898004, 4872505, 9745010, 19490020]

約数ペア:

[(1, 19490020), (2, 9745010), (4, 4872505), (5, 3898004), (10, 1949002), (11, 1771820), (20, 974501), (22, 885910), (44, 442955), (55, 354364), (110, 177182), (220, 88591)]