78490180

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{12619}}^1$

素因数の和:12939

約数の個数: 24

約数和(自身を含む): 165372480

約数和(自身を除く): 86882300

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 12619, 25238, 50476, 63095, 126190, 252380, 3924509, 7849018, 15698036, 19622545, 39245090, 78490180]

約数ペア:

[(1, 78490180), (2, 39245090), (4, 19622545), (5, 15698036), (10, 7849018), (20, 3924509), (311, 252380), (622, 126190), (1244, 63095), (1555, 50476), (3110, 25238), (6220, 12619)]