20125979505

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10401023}}^1$

素因数の和:10401077

約数の個数: 24

約数和(自身を含む): 35696314368

約数和(自身を除く): 15570334863

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10401023, 31203069, 52005115, 93609207, 156015345, 447243989, 468046035, 1341731967, 2236219945, 4025195901, 6708659835, 20125979505]

約数ペア:

[(1, 20125979505), (3, 6708659835), (5, 4025195901), (9, 2236219945), (15, 1341731967), (43, 468046035), (45, 447243989), (129, 156015345), (215, 93609207), (387, 52005115), (645, 31203069), (1935, 10401023)]