31579480

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7243}}^1$

素因数の和:7363

約数の個数: 32

約数和(自身を含む): 71715600

約数和(自身を除く): 40136120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 7243, 14486, 28972, 36215, 57944, 72430, 144860, 289720, 789487, 1578974, 3157948, 3947435, 6315896, 7894870, 15789740, 31579480]

約数ペア:

[(1, 31579480), (2, 15789740), (4, 7894870), (5, 6315896), (8, 3947435), (10, 3157948), (20, 1578974), (40, 789487), (109, 289720), (218, 144860), (436, 72430), (545, 57944), (872, 36215), (1090, 28972), (2180, 14486), (4360, 7243)]