19131980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{136657}}^1$

素因数の和:136673

約数の個数: 24

約数和(自身を含む): 45917088

約数和(自身を除く): 26785108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 136657, 273314, 546628, 683285, 956599, 1366570, 1913198, 2733140, 3826396, 4782995, 9565990, 19131980]

約数ペア:

[(1, 19131980), (2, 9565990), (4, 4782995), (5, 3826396), (7, 2733140), (10, 1913198), (14, 1366570), (20, 956599), (28, 683285), (35, 546628), (70, 273314), (140, 136657)]