18981460

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13001}}^1$

素因数の和:13083

約数の個数: 24

約数和(自身を含む): 40410216

約数和(自身を除く): 21428756

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 13001, 26002, 52004, 65005, 130010, 260020, 949073, 1898146, 3796292, 4745365, 9490730, 18981460]

約数ペア:

[(1, 18981460), (2, 9490730), (4, 4745365), (5, 3796292), (10, 1898146), (20, 949073), (73, 260020), (146, 130010), (292, 65005), (365, 52004), (730, 26002), (1460, 13001)]