278312575

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{421}}^1\times {\mathrm{853}}^1$

素因数の和:1315

約数の個数: 24

約数和(自身を含む): 357504896

約数和(自身を除く): 79192321

約数列:

[1, 5, 25, 31, 155, 421, 775, 853, 2105, 4265, 10525, 13051, 21325, 26443, 65255, 132215, 326275, 359113, 661075, 1795565, 8977825, 11132503, 55662515, 278312575]

約数ペア:

[(1, 278312575), (5, 55662515), (25, 11132503), (31, 8977825), (155, 1795565), (421, 661075), (775, 359113), (853, 326275), (2105, 132215), (4265, 65255), (10525, 26443), (13051, 21325)]