218936720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{66749}}^1$

素因数の和:66803

約数の個数: 40

約数和(自身を含む): 521451000

約数和(自身を除く): 302514280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 66749, 133498, 266996, 333745, 533992, 667490, 1067984, 1334980, 2669960, 2736709, 5339920, 5473418, 10946836, 13683545, 21893672, 27367090, 43787344, 54734180, 109468360, 218936720]

約数ペア:

[(1, 218936720), (2, 109468360), (4, 54734180), (5, 43787344), (8, 27367090), (10, 21893672), (16, 13683545), (20, 10946836), (40, 5473418), (41, 5339920), (80, 2736709), (82, 2669960), (164, 1334980), (205, 1067984), (328, 667490), (410, 533992), (656, 333745), (820, 266996), (1640, 133498), (3280, 66749)]