18229840

素因数分解:

$2^4\times 5^1\times {\mathrm{227873}}^1$

素因数の和:227886

約数の個数: 20

約数和(自身を含む): 42384564

約数和(自身を除く): 24154724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227873, 455746, 911492, 1139365, 1822984, 2278730, 3645968, 4557460, 9114920, 18229840]

約数ペア:

[(1, 18229840), (2, 9114920), (4, 4557460), (5, 3645968), (8, 2278730), (10, 1822984), (16, 1139365), (20, 911492), (40, 455746), (80, 227873)]