81405556

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{2053}}^1$

素因数の和:2511

約数の個数: 24

約数和(自身を含む): 149071104

約数和(自身を除く): 67665548

約数列:

[1, 2, 4, 23, 46, 92, 431, 862, 1724, 2053, 4106, 8212, 9913, 19826, 39652, 47219, 94438, 188876, 884843, 1769686, 3539372, 20351389, 40702778, 81405556]

約数ペア:

[(1, 81405556), (2, 40702778), (4, 20351389), (23, 3539372), (46, 1769686), (92, 884843), (431, 188876), (862, 94438), (1724, 47219), (2053, 39652), (4106, 19826), (8212, 9913)]