19979145

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8377}}^1$

素因数の和:8441

約数の個数: 24

約数和(自身を含む): 35288136

約数和(自身を除く): 15308991

約数列:

[1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795, 2385, 8377, 25131, 41885, 75393, 125655, 376965, 443981, 1331943, 2219905, 3995829, 6659715, 19979145]

約数ペア:

[(1, 19979145), (3, 6659715), (5, 3995829), (9, 2219905), (15, 1331943), (45, 443981), (53, 376965), (159, 125655), (265, 75393), (477, 41885), (795, 25131), (2385, 8377)]