21055564798

素因数分解:

$2^1\times {\mathrm{137}}^1\times {\mathrm{3943}}^1\times {\mathrm{19489}}^1$

素因数の和:23571

約数の個数: 16

約数和(自身を含む): 31823583840

約数和(自身を除く): 10768019042

約数列:

[1, 2, 137, 274, 3943, 7886, 19489, 38978, 540191, 1080382, 2669993, 5339986, 76845127, 153690254, 10527782399, 21055564798]

約数ペア:

[(1, 21055564798), (2, 10527782399), (137, 153690254), (274, 76845127), (3943, 5339986), (7886, 2669993), (19489, 1080382), (38978, 540191)]