20847177

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 34664448

約数和(自身を除く): 13817271

約数列:

[1, 3, 9, 13, 23, 39, 61, 69, 117, 127, 183, 207, 299, 381, 549, 793, 897, 1143, 1403, 1651, 2379, 2691, 2921, 4209, 4953, 7137, 7747, 8763, 12627, 14859, 18239, 23241, 26289, 37973, 54717, 69723, 100711, 113919, 164151, 178181, 302133, 341757, 534543, 906399, 1603629, 2316353, 6949059, 20847177]

約数ペア:

[(1, 20847177), (3, 6949059), (9, 2316353), (13, 1603629), (23, 906399), (39, 534543), (61, 341757), (69, 302133), (117, 178181), (127, 164151), (183, 113919), (207, 100711), (299, 69723), (381, 54717), (549, 37973), (793, 26289), (897, 23241), (1143, 18239), (1403, 14859), (1651, 12627), (2379, 8763), (2691, 7747), (2921, 7137), (4209, 4953)]