21155500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1459}}^1$

素因数の和:1507

約数の個数: 48

約数和(自身を含む): 47829600

約数和(自身を除く): 26674100

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 1450, 1459, 2900, 2918, 3625, 5836, 7250, 7295, 14500, 14590, 29180, 36475, 42311, 72950, 84622, 145900, 169244, 182375, 211555, 364750, 423110, 729500, 846220, 1057775, 2115550, 4231100, 5288875, 10577750, 21155500]

約数ペア:

[(1, 21155500), (2, 10577750), (4, 5288875), (5, 4231100), (10, 2115550), (20, 1057775), (25, 846220), (29, 729500), (50, 423110), (58, 364750), (100, 211555), (116, 182375), (125, 169244), (145, 145900), (250, 84622), (290, 72950), (500, 42311), (580, 36475), (725, 29180), (1450, 14590), (1459, 14500), (2900, 7295), (2918, 7250), (3625, 5836)]