28405195

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{383}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 42319872

約数和(自身を除く): 13914677

約数列:

[1, 5, 7, 13, 35, 65, 91, 163, 383, 455, 815, 1141, 1915, 2119, 2681, 4979, 5705, 10595, 13405, 14833, 24895, 34853, 62429, 74165, 174265, 312145, 437003, 811577, 2185015, 4057885, 5681039, 28405195]

約数ペア:

[(1, 28405195), (5, 5681039), (7, 4057885), (13, 2185015), (35, 811577), (65, 437003), (91, 312145), (163, 174265), (383, 74165), (455, 62429), (815, 34853), (1141, 24895), (1915, 14833), (2119, 13405), (2681, 10595), (4979, 5705)]