21725900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{757}}^1$

素因数の和:819

約数の個数: 72

約数和(自身を含む): 55267296

約数和(自身を除く): 33541396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 41, 50, 70, 82, 100, 140, 164, 175, 205, 287, 350, 410, 574, 700, 757, 820, 1025, 1148, 1435, 1514, 2050, 2870, 3028, 3785, 4100, 5299, 5740, 7175, 7570, 10598, 14350, 15140, 18925, 21196, 26495, 28700, 31037, 37850, 52990, 62074, 75700, 105980, 124148, 132475, 155185, 217259, 264950, 310370, 434518, 529900, 620740, 775925, 869036, 1086295, 1551850, 2172590, 3103700, 4345180, 5431475, 10862950, 21725900]

約数ペア:

[(1, 21725900), (2, 10862950), (4, 5431475), (5, 4345180), (7, 3103700), (10, 2172590), (14, 1551850), (20, 1086295), (25, 869036), (28, 775925), (35, 620740), (41, 529900), (50, 434518), (70, 310370), (82, 264950), (100, 217259), (140, 155185), (164, 132475), (175, 124148), (205, 105980), (287, 75700), (350, 62074), (410, 52990), (574, 37850), (700, 31037), (757, 28700), (820, 26495), (1025, 21196), (1148, 18925), (1435, 15140), (1514, 14350), (2050, 10598), (2870, 7570), (3028, 7175), (3785, 5740), (4100, 5299)]