1305440

素因数分解:

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

素因数の和:255

約数の個数: 48

約数和(自身を含む): 3175200

約数和(自身を除く): 1869760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 199, 205, 328, 398, 410, 656, 796, 820, 995, 1312, 1592, 1640, 1990, 3184, 3280, 3980, 6368, 6560, 7960, 8159, 15920, 16318, 31840, 32636, 40795, 65272, 81590, 130544, 163180, 261088, 326360, 652720, 1305440]

約数ペア:

[(1, 1305440), (2, 652720), (4, 326360), (5, 261088), (8, 163180), (10, 130544), (16, 81590), (20, 65272), (32, 40795), (40, 32636), (41, 31840), (80, 16318), (82, 15920), (160, 8159), (164, 7960), (199, 6560), (205, 6368), (328, 3980), (398, 3280), (410, 3184), (656, 1990), (796, 1640), (820, 1592), (995, 1312)]