19765090

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5081}}^1$

素因数の和:5477

約数の個数: 16

約数和(自身を含む): 35675640

約数和(自身を除く): 15910550

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 5081, 10162, 25405, 50810, 1976509, 3953018, 9882545, 19765090]

約数ペア:

[(1, 19765090), (2, 9882545), (5, 3953018), (10, 1976509), (389, 50810), (778, 25405), (1945, 10162), (3890, 5081)]