21380710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1009}}^1$

素因数の和:1192

約数の個数: 32

約数和(自身を含む): 41741280

約数和(自身を除く): 20360570

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163, 326, 815, 1009, 1630, 2018, 2119, 4238, 5045, 10090, 10595, 13117, 21190, 26234, 65585, 131170, 164467, 328934, 822335, 1644670, 2138071, 4276142, 10690355, 21380710]

約数ペア:

[(1, 21380710), (2, 10690355), (5, 4276142), (10, 2138071), (13, 1644670), (26, 822335), (65, 328934), (130, 164467), (163, 131170), (326, 65585), (815, 26234), (1009, 21190), (1630, 13117), (2018, 10595), (2119, 10090), (4238, 5045)]