19832680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{367}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 51402240

約数和(自身を除く): 31569560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 193, 280, 367, 386, 734, 772, 965, 1351, 1468, 1544, 1835, 1930, 2569, 2702, 2936, 3670, 3860, 5138, 5404, 6755, 7340, 7720, 10276, 10808, 12845, 13510, 14680, 20552, 25690, 27020, 51380, 54040, 70831, 102760, 141662, 283324, 354155, 495817, 566648, 708310, 991634, 1416620, 1983268, 2479085, 2833240, 3966536, 4958170, 9916340, 19832680]

約数ペア:

[(1, 19832680), (2, 9916340), (4, 4958170), (5, 3966536), (7, 2833240), (8, 2479085), (10, 1983268), (14, 1416620), (20, 991634), (28, 708310), (35, 566648), (40, 495817), (56, 354155), (70, 283324), (140, 141662), (193, 102760), (280, 70831), (367, 54040), (386, 51380), (734, 27020), (772, 25690), (965, 20552), (1351, 14680), (1468, 13510), (1544, 12845), (1835, 10808), (1930, 10276), (2569, 7720), (2702, 7340), (2936, 6755), (3670, 5404), (3860, 5138)]