21003245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{2399}}^1$

素因数の和:2524

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5953555

約数列:

[1, 5, 17, 85, 103, 515, 1751, 2399, 8755, 11995, 40783, 203915, 247097, 1235485, 4200649, 21003245]

約数ペア:

[(1, 21003245), (5, 4200649), (17, 1235485), (85, 247097), (103, 203915), (515, 40783), (1751, 11995), (2399, 8755)]