21977908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{4073}}^1$

素因数の和:4167

約数の個数: 24

約数和(自身を含む): 41065920

約数和(自身を除く): 19088012

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 4073, 5396, 8146, 16292, 77387, 154774, 289183, 309548, 578366, 1156732, 5494477, 10988954, 21977908]

約数ペア:

[(1, 21977908), (2, 10988954), (4, 5494477), (19, 1156732), (38, 578366), (71, 309548), (76, 289183), (142, 154774), (284, 77387), (1349, 16292), (2698, 8146), (4073, 5396)]