19961277

素因数分解:

$3^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{541}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 31141152

約数和(自身を除く): 11179875

約数列:

[1, 3, 7, 21, 49, 147, 251, 541, 753, 1623, 1757, 3787, 5271, 11361, 12299, 26509, 36897, 79527, 135791, 407373, 950537, 2851611, 6653759, 19961277]

約数ペア:

[(1, 19961277), (3, 6653759), (7, 2851611), (21, 950537), (49, 407373), (147, 135791), (251, 79527), (541, 36897), (753, 26509), (1623, 12299), (1757, 11361), (3787, 5271)]