21004900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{811}}^1$

素因数の和:869

約数の個数: 72

約数和(自身を含む): 53566016

約数和(自身を除く): 32561116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 37, 50, 70, 74, 100, 140, 148, 175, 185, 259, 350, 370, 518, 700, 740, 811, 925, 1036, 1295, 1622, 1850, 2590, 3244, 3700, 4055, 5180, 5677, 6475, 8110, 11354, 12950, 16220, 20275, 22708, 25900, 28385, 30007, 40550, 56770, 60014, 81100, 113540, 120028, 141925, 150035, 210049, 283850, 300070, 420098, 567700, 600140, 750175, 840196, 1050245, 1500350, 2100490, 3000700, 4200980, 5251225, 10502450, 21004900]

約数ペア:

[(1, 21004900), (2, 10502450), (4, 5251225), (5, 4200980), (7, 3000700), (10, 2100490), (14, 1500350), (20, 1050245), (25, 840196), (28, 750175), (35, 600140), (37, 567700), (50, 420098), (70, 300070), (74, 283850), (100, 210049), (140, 150035), (148, 141925), (175, 120028), (185, 113540), (259, 81100), (350, 60014), (370, 56770), (518, 40550), (700, 30007), (740, 28385), (811, 25900), (925, 22708), (1036, 20275), (1295, 16220), (1622, 12950), (1850, 11354), (2590, 8110), (3244, 6475), (3700, 5677), (4055, 5180)]