21811370

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{6359}}^1$

素因数の和:6387

約数の個数: 32

約数和(自身を含む): 45792000

約数和(自身を除く): 23980630

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 6359, 12718, 31795, 44513, 63590, 89026, 222565, 311591, 445130, 623182, 1557955, 2181137, 3115910, 4362274, 10905685, 21811370]

約数ペア:

[(1, 21811370), (2, 10905685), (5, 4362274), (7, 3115910), (10, 2181137), (14, 1557955), (35, 623182), (49, 445130), (70, 311591), (98, 222565), (245, 89026), (343, 63590), (490, 44513), (686, 31795), (1715, 12718), (3430, 6359)]