12928075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1601}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 17878320

約数和(自身を除く): 4950245

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1601, 1615, 8005, 8075, 27217, 30419, 40025, 136085, 152095, 517123, 680425, 760475, 2585615, 12928075]

約数ペア:

[(1, 12928075), (5, 2585615), (17, 760475), (19, 680425), (25, 517123), (85, 152095), (95, 136085), (323, 40025), (425, 30419), (475, 27217), (1601, 8075), (1615, 8005)]