20641782

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{359}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 48625920

約数和(自身を除く): 27984138

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 111, 222, 259, 359, 518, 718, 777, 1077, 1369, 1554, 2154, 2513, 2738, 4107, 5026, 7539, 8214, 9583, 13283, 15078, 19166, 26566, 28749, 39849, 57498, 79698, 92981, 185962, 278943, 491471, 557886, 982942, 1474413, 2948826, 3440297, 6880594, 10320891, 20641782]

約数ペア:

[(1, 20641782), (2, 10320891), (3, 6880594), (6, 3440297), (7, 2948826), (14, 1474413), (21, 982942), (37, 557886), (42, 491471), (74, 278943), (111, 185962), (222, 92981), (259, 79698), (359, 57498), (518, 39849), (718, 28749), (777, 26566), (1077, 19166), (1369, 15078), (1554, 13283), (2154, 9583), (2513, 8214), (2738, 7539), (4107, 5026)]