18994885

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 9390395

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 383, 455, 545, 763, 1417, 1915, 2681, 3815, 4979, 7085, 9919, 13405, 24895, 34853, 41747, 49595, 174265, 208735, 292229, 542711, 1461145, 2713555, 3798977, 18994885]

約数ペア:

[(1, 18994885), (5, 3798977), (7, 2713555), (13, 1461145), (35, 542711), (65, 292229), (91, 208735), (109, 174265), (383, 49595), (455, 41747), (545, 34853), (763, 24895), (1417, 13405), (1915, 9919), (2681, 7085), (3815, 4979)]