20881570556

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2947709}}^1$

素因数の和:2947754

約数の個数: 48

約数和(自身を含む): 47540666880

約数和(自身を除く): 26659096324

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 44, 46, 77, 92, 154, 161, 253, 308, 322, 506, 644, 1012, 1771, 3542, 7084, 2947709, 5895418, 11790836, 20633963, 32424799, 41267926, 64849598, 67797307, 82535852, 129699196, 135594614, 226973593, 271189228, 453947186, 474581149, 745770377, 907894372, 949162298, 1491540754, 1898324596, 2983081508, 5220392639, 10440785278, 20881570556]

約数ペア:

[(1, 20881570556), (2, 10440785278), (4, 5220392639), (7, 2983081508), (11, 1898324596), (14, 1491540754), (22, 949162298), (23, 907894372), (28, 745770377), (44, 474581149), (46, 453947186), (77, 271189228), (92, 226973593), (154, 135594614), (161, 129699196), (253, 82535852), (308, 67797307), (322, 64849598), (506, 41267926), (644, 32424799), (1012, 20633963), (1771, 11790836), (3542, 5895418), (7084, 2947709)]