18007960

素因数分解:

$2^3\times 5^1\times {\mathrm{450199}}^1$

素因数の和:450210

約数の個数: 16

約数和(自身を含む): 40518000

約数和(自身を除く): 22510040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450199, 900398, 1800796, 2250995, 3601592, 4501990, 9003980, 18007960]

約数ペア:

[(1, 18007960), (2, 9003980), (4, 4501990), (5, 3601592), (8, 2250995), (10, 1800796), (20, 900398), (40, 450199)]