87651140

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{45181}}^1$

素因数の和:45287

約数の個数: 24

約数和(自身を含む): 185969112

約数和(自身を除く): 98317972

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 45181, 90362, 180724, 225905, 451810, 903620, 4382557, 8765114, 17530228, 21912785, 43825570, 87651140]

約数ペア:

[(1, 87651140), (2, 43825570), (4, 21912785), (5, 17530228), (10, 8765114), (20, 4382557), (97, 903620), (194, 451810), (388, 225905), (485, 180724), (970, 90362), (1940, 45181)]