25726779

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 42981120

約数和(自身を除く): 17254341

約数列:

[1, 3, 9, 13, 19, 39, 57, 71, 117, 163, 171, 213, 247, 489, 639, 741, 923, 1349, 1467, 2119, 2223, 2769, 3097, 4047, 6357, 8307, 9291, 11573, 12141, 17537, 19071, 27873, 34719, 40261, 52611, 104157, 120783, 150449, 157833, 219887, 362349, 451347, 659661, 1354041, 1978983, 2858531, 8575593, 25726779]

約数ペア:

[(1, 25726779), (3, 8575593), (9, 2858531), (13, 1978983), (19, 1354041), (39, 659661), (57, 451347), (71, 362349), (117, 219887), (163, 157833), (171, 150449), (213, 120783), (247, 104157), (489, 52611), (639, 40261), (741, 34719), (923, 27873), (1349, 19071), (1467, 17537), (2119, 12141), (2223, 11573), (2769, 9291), (3097, 8307), (4047, 6357)]