17899880

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{677}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 40395240

約数和(自身を除く): 22495360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 677, 1322, 1354, 2644, 2708, 3305, 3385, 5288, 5416, 6610, 6770, 13220, 13540, 26440, 27080, 447497, 894994, 1789988, 2237485, 3579976, 4474970, 8949940, 17899880]

約数ペア:

[(1, 17899880), (2, 8949940), (4, 4474970), (5, 3579976), (8, 2237485), (10, 1789988), (20, 894994), (40, 447497), (661, 27080), (677, 26440), (1322, 13540), (1354, 13220), (2644, 6770), (2708, 6610), (3305, 5416), (3385, 5288)]