21321200

素因数分解:

$2^4\times 5^2\times {\mathrm{151}}^1\times {\mathrm{353}}^1$

素因数の和:522

約数の個数: 60

約数和(自身を含む): 51709488

約数和(自身を除く): 30388288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 151, 200, 302, 353, 400, 604, 706, 755, 1208, 1412, 1510, 1765, 2416, 2824, 3020, 3530, 3775, 5648, 6040, 7060, 7550, 8825, 12080, 14120, 15100, 17650, 28240, 30200, 35300, 53303, 60400, 70600, 106606, 141200, 213212, 266515, 426424, 533030, 852848, 1066060, 1332575, 2132120, 2665150, 4264240, 5330300, 10660600, 21321200]

約数ペア:

[(1, 21321200), (2, 10660600), (4, 5330300), (5, 4264240), (8, 2665150), (10, 2132120), (16, 1332575), (20, 1066060), (25, 852848), (40, 533030), (50, 426424), (80, 266515), (100, 213212), (151, 141200), (200, 106606), (302, 70600), (353, 60400), (400, 53303), (604, 35300), (706, 30200), (755, 28240), (1208, 17650), (1412, 15100), (1510, 14120), (1765, 12080), (2416, 8825), (2824, 7550), (3020, 7060), (3530, 6040), (3775, 5648)]