2486139980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1\times {\mathrm{1039}}^1$

素因数の和:1890

約数の個数: 48

約数和(自身を含む): 5262741120

約数和(自身を除く): 2776601140

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 661, 724, 905, 1039, 1322, 1810, 2078, 2644, 3305, 3620, 4156, 5195, 6610, 10390, 13220, 20780, 119641, 188059, 239282, 376118, 478564, 598205, 686779, 752236, 940295, 1196410, 1373558, 1880590, 2392820, 2747116, 3433895, 3761180, 6867790, 13735580, 124306999, 248613998, 497227996, 621534995, 1243069990, 2486139980]

約数ペア:

[(1, 2486139980), (2, 1243069990), (4, 621534995), (5, 497227996), (10, 248613998), (20, 124306999), (181, 13735580), (362, 6867790), (661, 3761180), (724, 3433895), (905, 2747116), (1039, 2392820), (1322, 1880590), (1810, 1373558), (2078, 1196410), (2644, 940295), (3305, 752236), (3620, 686779), (4156, 598205), (5195, 478564), (6610, 376118), (10390, 239282), (13220, 188059), (20780, 119641)]