257852885

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{479}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 336199680

約数和(自身を除く): 78346795

約数列:

[1, 5, 23, 31, 115, 151, 155, 479, 713, 755, 2395, 3473, 3565, 4681, 11017, 14849, 17365, 23405, 55085, 72329, 74245, 107663, 341527, 361645, 538315, 1663567, 1707635, 2242199, 8317835, 11210995, 51570577, 257852885]

約数ペア:

[(1, 257852885), (5, 51570577), (23, 11210995), (31, 8317835), (115, 2242199), (151, 1707635), (155, 1663567), (479, 538315), (713, 361645), (755, 341527), (2395, 107663), (3473, 74245), (3565, 72329), (4681, 55085), (11017, 23405), (14849, 17365)]