18879760

素因数分解:

$2^4\times 5^1\times {\mathrm{235997}}^1$

素因数の和:236010

約数の個数: 20

約数和(自身を含む): 43895628

約数和(自身を除く): 25015868

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 235997, 471994, 943988, 1179985, 1887976, 2359970, 3775952, 4719940, 9439880, 18879760]

約数ペア:

[(1, 18879760), (2, 9439880), (4, 4719940), (5, 3775952), (8, 2359970), (10, 1887976), (16, 1179985), (20, 943988), (40, 471994), (80, 235997)]