81278812

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{2089}}^1$

素因数の和:2301

約数の個数: 24

約数和(自身を含む): 145363680

約数和(自身を除く): 64084868

約数列:

[1, 2, 4, 71, 137, 142, 274, 284, 548, 2089, 4178, 8356, 9727, 19454, 38908, 148319, 286193, 296638, 572386, 593276, 1144772, 20319703, 40639406, 81278812]

約数ペア:

[(1, 81278812), (2, 40639406), (4, 20319703), (71, 1144772), (137, 593276), (142, 572386), (274, 296638), (284, 286193), (548, 148319), (2089, 38908), (4178, 19454), (8356, 9727)]