20905360

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5333}}^1$

素因数の和:5360

約数の個数: 60

約数和(自身を含む): 56551068

約数和(自身を除く): 35645708

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5333, 10666, 21332, 26665, 37331, 42664, 53330, 74662, 85328, 106660, 149324, 186655, 213320, 261317, 298648, 373310, 426640, 522634, 597296, 746620, 1045268, 1306585, 1493240, 2090536, 2613170, 2986480, 4181072, 5226340, 10452680, 20905360]

約数ペア:

[(1, 20905360), (2, 10452680), (4, 5226340), (5, 4181072), (7, 2986480), (8, 2613170), (10, 2090536), (14, 1493240), (16, 1306585), (20, 1045268), (28, 746620), (35, 597296), (40, 522634), (49, 426640), (56, 373310), (70, 298648), (80, 261317), (98, 213320), (112, 186655), (140, 149324), (196, 106660), (245, 85328), (280, 74662), (392, 53330), (490, 42664), (560, 37331), (784, 26665), (980, 21332), (1960, 10666), (3920, 5333)]