18478100

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2339}}^1$

素因数の和:2432

約数の個数: 36

約数和(自身を含む): 40622400

約数和(自身を除く): 22144300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2339, 3950, 4678, 7900, 9356, 11695, 23390, 46780, 58475, 116950, 184781, 233900, 369562, 739124, 923905, 1847810, 3695620, 4619525, 9239050, 18478100]

約数ペア:

[(1, 18478100), (2, 9239050), (4, 4619525), (5, 3695620), (10, 1847810), (20, 923905), (25, 739124), (50, 369562), (79, 233900), (100, 184781), (158, 116950), (316, 58475), (395, 46780), (790, 23390), (1580, 11695), (1975, 9356), (2339, 7900), (3950, 4678)]