81774340

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{13147}}^1$

素因数の和:13467

約数の個数: 24

約数和(自身を含む): 172291392

約数和(自身を除く): 90517052

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 13147, 26294, 52588, 65735, 131470, 262940, 4088717, 8177434, 16354868, 20443585, 40887170, 81774340]

約数ペア:

[(1, 81774340), (2, 40887170), (4, 20443585), (5, 16354868), (10, 8177434), (20, 4088717), (311, 262940), (622, 131470), (1244, 65735), (1555, 52588), (3110, 26294), (6220, 13147)]