258057520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{65831}}^1$

素因数の和:65858

約数の個数: 60

約数和(自身を含む): 697950864

約数和(自身を除く): 439893344

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, 65831, 131662, 263324, 329155, 460817, 526648, 658310, 921634, 1053296, 1316620, 1843268, 2304085, 2633240, 3225719, 3686536, 4608170, 5266480, 6451438, 7373072, 9216340, 12902876, 16128595, 18432680, 25805752, 32257190, 36865360, 51611504, 64514380, 129028760, 258057520]

約数ペア:

[(1, 258057520), (2, 129028760), (4, 64514380), (5, 51611504), (7, 36865360), (8, 32257190), (10, 25805752), (14, 18432680), (16, 16128595), (20, 12902876), (28, 9216340), (35, 7373072), (40, 6451438), (49, 5266480), (56, 4608170), (70, 3686536), (80, 3225719), (98, 2633240), (112, 2304085), (140, 1843268), (196, 1316620), (245, 1053296), (280, 921634), (392, 658310), (490, 526648), (560, 460817), (784, 329155), (980, 263324), (1960, 131662), (3920, 65831)]