81145688

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{1277}}^1$

素因数の和:1356

約数の個数: 48

約数和(自身を含む): 168389280

約数和(自身を除く): 87243592

約数列:

[1, 2, 4, 8, 13, 26, 47, 52, 94, 104, 169, 188, 338, 376, 611, 676, 1222, 1277, 1352, 2444, 2554, 4888, 5108, 7943, 10216, 15886, 16601, 31772, 33202, 60019, 63544, 66404, 120038, 132808, 215813, 240076, 431626, 480152, 780247, 863252, 1560494, 1726504, 3120988, 6241976, 10143211, 20286422, 40572844, 81145688]

約数ペア:

[(1, 81145688), (2, 40572844), (4, 20286422), (8, 10143211), (13, 6241976), (26, 3120988), (47, 1726504), (52, 1560494), (94, 863252), (104, 780247), (169, 480152), (188, 431626), (338, 240076), (376, 215813), (611, 132808), (676, 120038), (1222, 66404), (1277, 63544), (1352, 60019), (2444, 33202), (2554, 31772), (4888, 16601), (5108, 15886), (7943, 10216)]