21490700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2791}}^1$

素因数の和:2823

約数の個数: 72

約数和(自身を含む): 58162944

約数和(自身を除く): 36672244

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 140, 154, 175, 220, 275, 308, 350, 385, 550, 700, 770, 1100, 1540, 1925, 2791, 3850, 5582, 7700, 11164, 13955, 19537, 27910, 30701, 39074, 55820, 61402, 69775, 78148, 97685, 122804, 139550, 153505, 195370, 214907, 279100, 307010, 390740, 429814, 488425, 614020, 767525, 859628, 976850, 1074535, 1535050, 1953700, 2149070, 3070100, 4298140, 5372675, 10745350, 21490700]

約数ペア:

[(1, 21490700), (2, 10745350), (4, 5372675), (5, 4298140), (7, 3070100), (10, 2149070), (11, 1953700), (14, 1535050), (20, 1074535), (22, 976850), (25, 859628), (28, 767525), (35, 614020), (44, 488425), (50, 429814), (55, 390740), (70, 307010), (77, 279100), (100, 214907), (110, 195370), (140, 153505), (154, 139550), (175, 122804), (220, 97685), (275, 78148), (308, 69775), (350, 61402), (385, 55820), (550, 39074), (700, 30701), (770, 27910), (1100, 19537), (1540, 13955), (1925, 11164), (2791, 7700), (3850, 5582)]