78813620

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{12671}}^1$

素因数の和:12991

約数の個数: 24

約数和(自身を含む): 166053888

約数和(自身を除く): 87240268

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 12671, 25342, 50684, 63355, 126710, 253420, 3940681, 7881362, 15762724, 19703405, 39406810, 78813620]

約数ペア:

[(1, 78813620), (2, 39406810), (4, 19703405), (5, 15762724), (10, 7881362), (20, 3940681), (311, 253420), (622, 126710), (1244, 63355), (1555, 50684), (3110, 25342), (6220, 12671)]