21560428

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{853}}^1$

素因数の和:1017

約数の個数: 24

約数和(自身を含む): 38737440

約数和(自身を除く): 17177012

約数列:

[1, 2, 4, 71, 89, 142, 178, 284, 356, 853, 1706, 3412, 6319, 12638, 25276, 60563, 75917, 121126, 151834, 242252, 303668, 5390107, 10780214, 21560428]

約数ペア:

[(1, 21560428), (2, 10780214), (4, 5390107), (71, 303668), (89, 242252), (142, 151834), (178, 121126), (284, 75917), (356, 60563), (853, 25276), (1706, 12638), (3412, 6319)]