20018680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45497}}^1$

素因数の和:45519

約数の個数: 32

約数和(自身を含む): 49137840

約数和(自身を除く): 29119160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45497, 90994, 181988, 227485, 363976, 454970, 500467, 909940, 1000934, 1819880, 2001868, 2502335, 4003736, 5004670, 10009340, 20018680]

約数ペア:

[(1, 20018680), (2, 10009340), (4, 5004670), (5, 4003736), (8, 2502335), (10, 2001868), (11, 1819880), (20, 1000934), (22, 909940), (40, 500467), (44, 454970), (55, 363976), (88, 227485), (110, 181988), (220, 90994), (440, 45497)]