20905072

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19501}}^1$

素因数の和:19576

約数の個数: 20

約数和(自身を含む): 41110216

約数和(自身を除く): 20205144

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19501, 39002, 78004, 156008, 312016, 1306567, 2613134, 5226268, 10452536, 20905072]

約数ペア:

[(1, 20905072), (2, 10452536), (4, 5226268), (8, 2613134), (16, 1306567), (67, 312016), (134, 156008), (268, 78004), (536, 39002), (1072, 19501)]