20397972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1747}}^1$

素因数の和:1900

約数の個数: 48

約数和(自身を含む): 54817280

約数和(自身を除く): 34419308

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 139, 278, 417, 556, 834, 973, 1668, 1747, 1946, 2919, 3494, 3892, 5241, 5838, 6988, 10482, 11676, 12229, 20964, 24458, 36687, 48916, 73374, 146748, 242833, 485666, 728499, 971332, 1456998, 1699831, 2913996, 3399662, 5099493, 6799324, 10198986, 20397972]

約数ペア:

[(1, 20397972), (2, 10198986), (3, 6799324), (4, 5099493), (6, 3399662), (7, 2913996), (12, 1699831), (14, 1456998), (21, 971332), (28, 728499), (42, 485666), (84, 242833), (139, 146748), (278, 73374), (417, 48916), (556, 36687), (834, 24458), (973, 20964), (1668, 12229), (1747, 11676), (1946, 10482), (2919, 6988), (3494, 5838), (3892, 5241)]