652720

素因数分解:

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

素因数の和:253

約数の個数: 40

約数和(自身を含む): 1562400

約数和(自身を除く): 909680

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, 40795, 65272, 81590, 130544, 163180, 326360, 652720]

約数ペア:

[(1, 652720), (2, 326360), (4, 163180), (5, 130544), (8, 81590), (10, 65272), (16, 40795), (20, 32636), (40, 16318), (41, 15920), (80, 8159), (82, 7960), (164, 3980), (199, 3280), (205, 3184), (328, 1990), (398, 1640), (410, 1592), (656, 995), (796, 820)]