20019340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90997}}^1$

素因数の和:91017

約数の個数: 24

約数和(自身を含む): 45862992

約数和(自身を除く): 25843652

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90997, 181994, 363988, 454985, 909970, 1000967, 1819940, 2001934, 4003868, 5004835, 10009670, 20019340]

約数ペア:

[(1, 20019340), (2, 10009670), (4, 5004835), (5, 4003868), (10, 2001934), (11, 1819940), (20, 1000967), (22, 909970), (44, 454985), (55, 363988), (110, 181994), (220, 90997)]