21905390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{1009}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 42759360

約数和(自身を除く): 20853970

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 167, 334, 835, 1009, 1670, 2018, 2171, 4342, 5045, 10090, 10855, 13117, 21710, 26234, 65585, 131170, 168503, 337006, 842515, 1685030, 2190539, 4381078, 10952695, 21905390]

約数ペア:

[(1, 21905390), (2, 10952695), (5, 4381078), (10, 2190539), (13, 1685030), (26, 842515), (65, 337006), (130, 168503), (167, 131170), (334, 65585), (835, 26234), (1009, 21710), (1670, 13117), (2018, 10855), (2171, 10090), (4342, 5045)]