12957920

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{743}}^1$

素因数の和:867

約数の個数: 48

約数和(自身を含む): 30935520

約数和(自身を除く): 17977600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 743, 872, 1090, 1486, 1744, 2180, 2972, 3488, 3715, 4360, 5944, 7430, 8720, 11888, 14860, 17440, 23776, 29720, 59440, 80987, 118880, 161974, 323948, 404935, 647896, 809870, 1295792, 1619740, 2591584, 3239480, 6478960, 12957920]

約数ペア:

[(1, 12957920), (2, 6478960), (4, 3239480), (5, 2591584), (8, 1619740), (10, 1295792), (16, 809870), (20, 647896), (32, 404935), (40, 323948), (80, 161974), (109, 118880), (160, 80987), (218, 59440), (436, 29720), (545, 23776), (743, 17440), (872, 14860), (1090, 11888), (1486, 8720), (1744, 7430), (2180, 5944), (2972, 4360), (3488, 3715)]