21351400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 57674880

約数和(自身を除く): 36323480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 101, 140, 151, 175, 200, 202, 280, 302, 350, 404, 505, 604, 700, 707, 755, 808, 1010, 1057, 1208, 1400, 1414, 1510, 2020, 2114, 2525, 2828, 3020, 3535, 3775, 4040, 4228, 5050, 5285, 5656, 6040, 7070, 7550, 8456, 10100, 10570, 14140, 15100, 15251, 17675, 20200, 21140, 26425, 28280, 30200, 30502, 35350, 42280, 52850, 61004, 70700, 76255, 105700, 106757, 122008, 141400, 152510, 211400, 213514, 305020, 381275, 427028, 533785, 610040, 762550, 854056, 1067570, 1525100, 2135140, 2668925, 3050200, 4270280, 5337850, 10675700, 21351400]

約数ペア:

[(1, 21351400), (2, 10675700), (4, 5337850), (5, 4270280), (7, 3050200), (8, 2668925), (10, 2135140), (14, 1525100), (20, 1067570), (25, 854056), (28, 762550), (35, 610040), (40, 533785), (50, 427028), (56, 381275), (70, 305020), (100, 213514), (101, 211400), (140, 152510), (151, 141400), (175, 122008), (200, 106757), (202, 105700), (280, 76255), (302, 70700), (350, 61004), (404, 52850), (505, 42280), (604, 35350), (700, 30502), (707, 30200), (755, 28280), (808, 26425), (1010, 21140), (1057, 20200), (1208, 17675), (1400, 15251), (1414, 15100), (1510, 14140), (2020, 10570), (2114, 10100), (2525, 8456), (2828, 7550), (3020, 7070), (3535, 6040), (3775, 5656), (4040, 5285), (4228, 5050)]