21211400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 57288000

約数和(自身を除く): 36076600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 109, 139, 140, 175, 200, 218, 278, 280, 350, 436, 545, 556, 695, 700, 763, 872, 973, 1090, 1112, 1390, 1400, 1526, 1946, 2180, 2725, 2780, 3052, 3475, 3815, 3892, 4360, 4865, 5450, 5560, 6104, 6950, 7630, 7784, 9730, 10900, 13900, 15151, 15260, 19075, 19460, 21800, 24325, 27800, 30302, 30520, 38150, 38920, 48650, 60604, 75755, 76300, 97300, 106057, 121208, 151510, 152600, 194600, 212114, 303020, 378775, 424228, 530285, 606040, 757550, 848456, 1060570, 1515100, 2121140, 2651425, 3030200, 4242280, 5302850, 10605700, 21211400]

約数ペア:

[(1, 21211400), (2, 10605700), (4, 5302850), (5, 4242280), (7, 3030200), (8, 2651425), (10, 2121140), (14, 1515100), (20, 1060570), (25, 848456), (28, 757550), (35, 606040), (40, 530285), (50, 424228), (56, 378775), (70, 303020), (100, 212114), (109, 194600), (139, 152600), (140, 151510), (175, 121208), (200, 106057), (218, 97300), (278, 76300), (280, 75755), (350, 60604), (436, 48650), (545, 38920), (556, 38150), (695, 30520), (700, 30302), (763, 27800), (872, 24325), (973, 21800), (1090, 19460), (1112, 19075), (1390, 15260), (1400, 15151), (1526, 13900), (1946, 10900), (2180, 9730), (2725, 7784), (2780, 7630), (3052, 6950), (3475, 6104), (3815, 5560), (3892, 5450), (4360, 4865)]