18016120

素因数分解:

$2^3\times 5^1\times {\mathrm{450403}}^1$

素因数の和:450414

約数の個数: 16

約数和(自身を含む): 40536360

約数和(自身を除く): 22520240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450403, 900806, 1801612, 2252015, 3603224, 4504030, 9008060, 18016120]

約数ペア:

[(1, 18016120), (2, 9008060), (4, 4504030), (5, 3603224), (8, 2252015), (10, 1801612), (20, 900806), (40, 450403)]