20087081721

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{619}}^1\times {\mathrm{3457}}^1$

素因数の和:4238

約数の個数: 48

約数和(自身を含む): 33445776000

約数和(自身を除く): 13358694279

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 619, 1043, 1341, 1857, 3129, 3457, 4333, 5571, 9387, 10371, 12999, 24199, 31113, 38997, 72597, 92231, 217791, 276693, 515093, 645617, 830079, 1545279, 1936851, 2139883, 3605651, 4635837, 5810553, 6419649, 10816953, 14979181, 19258947, 32450859, 44937543, 134812629, 318842567, 956527701, 2231897969, 2869583103, 6695693907, 20087081721]

約数ペア:

[(1, 20087081721), (3, 6695693907), (7, 2869583103), (9, 2231897969), (21, 956527701), (63, 318842567), (149, 134812629), (447, 44937543), (619, 32450859), (1043, 19258947), (1341, 14979181), (1857, 10816953), (3129, 6419649), (3457, 5810553), (4333, 4635837), (5571, 3605651), (9387, 2139883), (10371, 1936851), (12999, 1545279), (24199, 830079), (31113, 645617), (38997, 515093), (72597, 276693), (92231, 217791)]