189743020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{72421}}^1$

素因数の和:72561

約数の個数: 24

約数和(自身を含む): 401507568

約数和(自身を除く): 211764548

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 72421, 144842, 289684, 362105, 724210, 1448420, 9487151, 18974302, 37948604, 47435755, 94871510, 189743020]

約数ペア:

[(1, 189743020), (2, 94871510), (4, 47435755), (5, 37948604), (10, 18974302), (20, 9487151), (131, 1448420), (262, 724210), (524, 362105), (655, 289684), (1310, 144842), (2620, 72421)]