20668263

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{683}}^1$

素因数の和:835

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 14002329

約数列:

[1, 3, 7, 11, 21, 33, 77, 131, 231, 393, 683, 917, 1441, 2049, 2751, 4323, 4781, 7513, 10087, 14343, 22539, 30261, 52591, 89473, 157773, 268419, 626311, 984203, 1878933, 2952609, 6889421, 20668263]

約数ペア:

[(1, 20668263), (3, 6889421), (7, 2952609), (11, 1878933), (21, 984203), (33, 626311), (77, 268419), (131, 157773), (231, 89473), (393, 52591), (683, 30261), (917, 22539), (1441, 14343), (2049, 10087), (2751, 7513), (4323, 4781)]