16995280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1949}}^1$

素因数の和:2071

約数の個数: 40

約数和(自身を含む): 39897000

約数和(自身を除く): 22901720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 1949, 2180, 3898, 4360, 7796, 8720, 9745, 15592, 19490, 31184, 38980, 77960, 155920, 212441, 424882, 849764, 1062205, 1699528, 2124410, 3399056, 4248820, 8497640, 16995280]

約数ペア:

[(1, 16995280), (2, 8497640), (4, 4248820), (5, 3399056), (8, 2124410), (10, 1699528), (16, 1062205), (20, 849764), (40, 424882), (80, 212441), (109, 155920), (218, 77960), (436, 38980), (545, 31184), (872, 19490), (1090, 15592), (1744, 9745), (1949, 8720), (2180, 7796), (3898, 4360)]