19904080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{35543}}^1$

素因数の和:35563

約数の個数: 40

約数和(自身を含む): 52889472

約数和(自身を除く): 32985392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 35543, 71086, 142172, 177715, 248801, 284344, 355430, 497602, 568688, 710860, 995204, 1244005, 1421720, 1990408, 2488010, 2843440, 3980816, 4976020, 9952040, 19904080]

約数ペア:

[(1, 19904080), (2, 9952040), (4, 4976020), (5, 3980816), (7, 2843440), (8, 2488010), (10, 1990408), (14, 1421720), (16, 1244005), (20, 995204), (28, 710860), (35, 568688), (40, 497602), (56, 355430), (70, 284344), (80, 248801), (112, 177715), (140, 142172), (280, 71086), (560, 35543)]