31082440

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7129}}^1$

素因数の和:7249

約数の個数: 32

約数和(自身を含む): 70587000

約数和(自身を除く): 39504560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7129, 14258, 28516, 35645, 57032, 71290, 142580, 285160, 777061, 1554122, 3108244, 3885305, 6216488, 7770610, 15541220, 31082440]

約数ペア:

[(1, 31082440), (2, 15541220), (4, 7770610), (5, 6216488), (8, 3885305), (10, 3108244), (20, 1554122), (40, 777061), (109, 285160), (218, 142580), (436, 71290), (545, 57032), (872, 35645), (1090, 28516), (2180, 14258), (4360, 7129)]