438680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{997}}^1$

素因数の和:1019

約数の個数: 32

約数和(自身を含む): 1077840

約数和(自身を除く): 639160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 997, 1994, 3988, 4985, 7976, 9970, 10967, 19940, 21934, 39880, 43868, 54835, 87736, 109670, 219340, 438680]

約数ペア:

[(1, 438680), (2, 219340), (4, 109670), (5, 87736), (8, 54835), (10, 43868), (11, 39880), (20, 21934), (22, 19940), (40, 10967), (44, 9970), (55, 7976), (88, 4985), (110, 3988), (220, 1994), (440, 997)]