20123585540

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6172879}}^1$

素因数の和:6173051

約数の個数: 24

約数和(自身を含む): 42518797440

約数和(自身を除く): 22395211900

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6172879, 12345758, 24691516, 30864395, 61728790, 123457580, 1006179277, 2012358554, 4024717108, 5030896385, 10061792770, 20123585540]

約数ペア:

[(1, 20123585540), (2, 10061792770), (4, 5030896385), (5, 4024717108), (10, 2012358554), (20, 1006179277), (163, 123457580), (326, 61728790), (652, 30864395), (815, 24691516), (1630, 12345758), (3260, 6172879)]