84121280

素因数分解:

$2^6\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1321}}^1$

素因数の和:1537

約数の個数: 56

約数和(自身を含む): 201472800

約数和(自身を除く): 117351520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 199, 320, 398, 796, 995, 1321, 1592, 1990, 2642, 3184, 3980, 5284, 6368, 6605, 7960, 10568, 12736, 13210, 15920, 21136, 26420, 31840, 42272, 52840, 63680, 84544, 105680, 211360, 262879, 422720, 525758, 1051516, 1314395, 2103032, 2628790, 4206064, 5257580, 8412128, 10515160, 16824256, 21030320, 42060640, 84121280]

約数ペア:

[(1, 84121280), (2, 42060640), (4, 21030320), (5, 16824256), (8, 10515160), (10, 8412128), (16, 5257580), (20, 4206064), (32, 2628790), (40, 2103032), (64, 1314395), (80, 1051516), (160, 525758), (199, 422720), (320, 262879), (398, 211360), (796, 105680), (995, 84544), (1321, 63680), (1592, 52840), (1990, 42272), (2642, 31840), (3184, 26420), (3980, 21136), (5284, 15920), (6368, 13210), (6605, 12736), (7960, 10568)]