21957320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7129}}^1$

素因数の和:7158

約数の個数: 64

約数和(自身を含む): 61603200

約数和(自身を除く): 39645880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 7129, 14258, 28516, 35645, 49903, 57032, 71290, 78419, 99806, 142580, 156838, 199612, 249515, 285160, 313676, 392095, 399224, 499030, 548933, 627352, 784190, 998060, 1097866, 1568380, 1996120, 2195732, 2744665, 3136760, 4391464, 5489330, 10978660, 21957320]

約数ペア:

[(1, 21957320), (2, 10978660), (4, 5489330), (5, 4391464), (7, 3136760), (8, 2744665), (10, 2195732), (11, 1996120), (14, 1568380), (20, 1097866), (22, 998060), (28, 784190), (35, 627352), (40, 548933), (44, 499030), (55, 399224), (56, 392095), (70, 313676), (77, 285160), (88, 249515), (110, 199612), (140, 156838), (154, 142580), (220, 99806), (280, 78419), (308, 71290), (385, 57032), (440, 49903), (616, 35645), (770, 28516), (1540, 14258), (3080, 7129)]