20354890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{719}}^1$

素因数の和:894

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18525110

約数列:

[1, 2, 5, 10, 19, 38, 95, 149, 190, 298, 719, 745, 1438, 1490, 2831, 3595, 5662, 7190, 13661, 14155, 27322, 28310, 68305, 107131, 136610, 214262, 535655, 1071310, 2035489, 4070978, 10177445, 20354890]

約数ペア:

[(1, 20354890), (2, 10177445), (5, 4070978), (10, 2035489), (19, 1071310), (38, 535655), (95, 214262), (149, 136610), (190, 107131), (298, 68305), (719, 28310), (745, 27322), (1438, 14155), (1490, 13661), (2831, 7190), (3595, 5662)]