21087769072

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18563177}}^1$

素因数の和:18563256

約数の個数: 20

約数和(自身を含む): 41433013296

約数和(自身を除く): 20345244224

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18563177, 37126354, 74252708, 148505416, 297010832, 1317985567, 2635971134, 5271942268, 10543884536, 21087769072]

約数ペア:

[(1, 21087769072), (2, 10543884536), (4, 5271942268), (8, 2635971134), (16, 1317985567), (71, 297010832), (142, 148505416), (284, 74252708), (568, 37126354), (1136, 18563177)]