18369220

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2131}}^1$

素因数の和:2571

約数の個数: 24

約数和(自身を含む): 38683008

約数和(自身を除く): 20313788

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2131, 2155, 4262, 4310, 8524, 8620, 10655, 21310, 42620, 918461, 1836922, 3673844, 4592305, 9184610, 18369220]

約数ペア:

[(1, 18369220), (2, 9184610), (4, 4592305), (5, 3673844), (10, 1836922), (20, 918461), (431, 42620), (862, 21310), (1724, 10655), (2131, 8620), (2155, 8524), (4262, 4310)]