21880452848

素因数分解:

$2^4\times {\mathrm{9803}}^1\times {\mathrm{139501}}^1$

素因数の和:149312

約数の個数: 20

約数和(自身を含む): 42398005848

約数和(自身を除く): 20517553000

約数列:

[1, 2, 4, 8, 16, 9803, 19606, 39212, 78424, 139501, 156848, 279002, 558004, 1116008, 2232016, 1367528303, 2735056606, 5470113212, 10940226424, 21880452848]

約数ペア:

[(1, 21880452848), (2, 10940226424), (4, 5470113212), (8, 2735056606), (16, 1367528303), (9803, 2232016), (19606, 1116008), (39212, 558004), (78424, 279002), (139501, 156848)]