18140720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17443}}^1$

素因数の和:17469

約数の個数: 40

約数和(自身を含む): 45424176

約数和(自身を除く): 27283456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17443, 34886, 69772, 87215, 139544, 174430, 226759, 279088, 348860, 453518, 697720, 907036, 1133795, 1395440, 1814072, 2267590, 3628144, 4535180, 9070360, 18140720]

約数ペア:

[(1, 18140720), (2, 9070360), (4, 4535180), (5, 3628144), (8, 2267590), (10, 1814072), (13, 1395440), (16, 1133795), (20, 907036), (26, 697720), (40, 453518), (52, 348860), (65, 279088), (80, 226759), (104, 174430), (130, 139544), (208, 87215), (260, 69772), (520, 34886), (1040, 17443)]