20961372

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{439}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 51448320

約数和(自身を除く): 30486948

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 173, 276, 346, 439, 519, 692, 878, 1038, 1317, 1756, 2076, 2634, 3979, 5268, 7958, 10097, 11937, 15916, 20194, 23874, 30291, 40388, 47748, 60582, 75947, 121164, 151894, 227841, 303788, 455682, 911364, 1746781, 3493562, 5240343, 6987124, 10480686, 20961372]

約数ペア:

[(1, 20961372), (2, 10480686), (3, 6987124), (4, 5240343), (6, 3493562), (12, 1746781), (23, 911364), (46, 455682), (69, 303788), (92, 227841), (138, 151894), (173, 121164), (276, 75947), (346, 60582), (439, 47748), (519, 40388), (692, 30291), (878, 23874), (1038, 20194), (1317, 15916), (1756, 11937), (2076, 10097), (2634, 7958), (3979, 5268)]