129891280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^2$

素因数の和:452

約数の個数: 60

約数和(自身を含む): 310925412

約数和(自身を除く): 181034132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 199, 205, 328, 398, 410, 656, 796, 820, 995, 1592, 1640, 1990, 3184, 3280, 3980, 7960, 8159, 15920, 16318, 32636, 39601, 40795, 65272, 79202, 81590, 130544, 158404, 163180, 198005, 316808, 326360, 396010, 633616, 652720, 792020, 1584040, 1623641, 3168080, 3247282, 6494564, 8118205, 12989128, 16236410, 25978256, 32472820, 64945640, 129891280]

約数ペア:

[(1, 129891280), (2, 64945640), (4, 32472820), (5, 25978256), (8, 16236410), (10, 12989128), (16, 8118205), (20, 6494564), (40, 3247282), (41, 3168080), (80, 1623641), (82, 1584040), (164, 792020), (199, 652720), (205, 633616), (328, 396010), (398, 326360), (410, 316808), (656, 198005), (796, 163180), (820, 158404), (995, 130544), (1592, 81590), (1640, 79202), (1990, 65272), (3184, 40795), (3280, 39601), (3980, 32636), (7960, 16318), (8159, 15920)]