28157905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 37319040

約数和(自身を除く): 9161135

約数列:

[1, 5, 19, 43, 61, 95, 113, 215, 305, 565, 817, 1159, 2147, 2623, 4085, 4859, 5795, 6893, 10735, 13115, 24295, 34465, 49837, 92321, 130967, 249185, 296399, 461605, 654835, 1481995, 5631581, 28157905]

約数ペア:

[(1, 28157905), (5, 5631581), (19, 1481995), (43, 654835), (61, 461605), (95, 296399), (113, 249185), (215, 130967), (305, 92321), (565, 49837), (817, 34465), (1159, 24295), (2147, 13115), (2623, 10735), (4085, 6893), (4859, 5795)]