21303699440

素因数分解:

$2^4\times 5^1\times {\mathrm{266296243}}^1$

素因数の和:266296256

約数の個数: 20

約数和(自身を含む): 49531101384

約数和(自身を除く): 28227401944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 266296243, 532592486, 1065184972, 1331481215, 2130369944, 2662962430, 4260739888, 5325924860, 10651849720, 21303699440]

約数ペア:

[(1, 21303699440), (2, 10651849720), (4, 5325924860), (5, 4260739888), (8, 2662962430), (10, 2130369944), (16, 1331481215), (20, 1065184972), (40, 532592486), (80, 266296243)]