20904536

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{907}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 40751040

約数和(自身を除く): 19846504

約数列:

[1, 2, 4, 8, 43, 67, 86, 134, 172, 268, 344, 536, 907, 1814, 2881, 3628, 5762, 7256, 11524, 23048, 39001, 60769, 78002, 121538, 156004, 243076, 312008, 486152, 2613067, 5226134, 10452268, 20904536]

約数ペア:

[(1, 20904536), (2, 10452268), (4, 5226134), (8, 2613067), (43, 486152), (67, 312008), (86, 243076), (134, 156004), (172, 121538), (268, 78002), (344, 60769), (536, 39001), (907, 23048), (1814, 11524), (2881, 7256), (3628, 5762)]