31576720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:632

約数の個数: 80

約数和(自身を含む): 84816000

約数和(自身を除く): 53239280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 452, 499, 560, 565, 791, 904, 998, 1130, 1582, 1808, 1996, 2260, 2495, 3164, 3493, 3955, 3992, 4520, 4990, 6328, 6986, 7910, 7984, 9040, 9980, 12656, 13972, 15820, 17465, 19960, 27944, 31640, 34930, 39920, 55888, 56387, 63280, 69860, 112774, 139720, 225548, 279440, 281935, 394709, 451096, 563870, 789418, 902192, 1127740, 1578836, 1973545, 2255480, 3157672, 3947090, 4510960, 6315344, 7894180, 15788360, 31576720]

約数ペア:

[(1, 31576720), (2, 15788360), (4, 7894180), (5, 6315344), (7, 4510960), (8, 3947090), (10, 3157672), (14, 2255480), (16, 1973545), (20, 1578836), (28, 1127740), (35, 902192), (40, 789418), (56, 563870), (70, 451096), (80, 394709), (112, 281935), (113, 279440), (140, 225548), (226, 139720), (280, 112774), (452, 69860), (499, 63280), (560, 56387), (565, 55888), (791, 39920), (904, 34930), (998, 31640), (1130, 27944), (1582, 19960), (1808, 17465), (1996, 15820), (2260, 13972), (2495, 12656), (3164, 9980), (3493, 9040), (3955, 7984), (3992, 7910), (4520, 6986), (4990, 6328)]