81831820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{9907}}^1$

素因数の和:9982

約数の個数: 48

約数和(自身を含む): 199745280

約数和(自身を除く): 117913460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 4130, 8260, 9907, 19814, 39628, 49535, 69349, 99070, 138698, 198140, 277396, 346745, 584513, 693490, 1169026, 1386980, 2338052, 2922565, 4091591, 5845130, 8183182, 11690260, 16366364, 20457955, 40915910, 81831820]

約数ペア:

[(1, 81831820), (2, 40915910), (4, 20457955), (5, 16366364), (7, 11690260), (10, 8183182), (14, 5845130), (20, 4091591), (28, 2922565), (35, 2338052), (59, 1386980), (70, 1169026), (118, 693490), (140, 584513), (236, 346745), (295, 277396), (413, 198140), (590, 138698), (826, 99070), (1180, 69349), (1652, 49535), (2065, 39628), (4130, 19814), (8260, 9907)]