17691880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1721}}^1$

素因数の和:1989

約数の個数: 32

約数和(自身を含む): 39984840

約数和(自身を除く): 22292960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1721, 2056, 2570, 3442, 5140, 6884, 8605, 10280, 13768, 17210, 34420, 68840, 442297, 884594, 1769188, 2211485, 3538376, 4422970, 8845940, 17691880]

約数ペア:

[(1, 17691880), (2, 8845940), (4, 4422970), (5, 3538376), (8, 2211485), (10, 1769188), (20, 884594), (40, 442297), (257, 68840), (514, 34420), (1028, 17210), (1285, 13768), (1721, 10280), (2056, 8605), (2570, 6884), (3442, 5140)]