21410775

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2213}}^1$

素因数の和:2272

約数の個数: 36

約数和(自身を含む): 39258648

約数和(自身を除く): 17847873

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2213, 3225, 6639, 9675, 11065, 19917, 33195, 55325, 95159, 99585, 165975, 285477, 475795, 497925, 856431, 1427385, 2378975, 4282155, 7136925, 21410775]

約数ペア:

[(1, 21410775), (3, 7136925), (5, 4282155), (9, 2378975), (15, 1427385), (25, 856431), (43, 497925), (45, 475795), (75, 285477), (129, 165975), (215, 99585), (225, 95159), (387, 55325), (645, 33195), (1075, 19917), (1935, 11065), (2213, 9675), (3225, 6639)]