21131340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20717}}^1$

素因数の和:20746

約数の個数: 48

約数和(自身を含む): 62651232

約数和(自身を除く): 41519892

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20717, 41434, 62151, 82868, 103585, 124302, 207170, 248604, 310755, 352189, 414340, 621510, 704378, 1056567, 1243020, 1408756, 1760945, 2113134, 3521890, 4226268, 5282835, 7043780, 10565670, 21131340]

約数ペア:

[(1, 21131340), (2, 10565670), (3, 7043780), (4, 5282835), (5, 4226268), (6, 3521890), (10, 2113134), (12, 1760945), (15, 1408756), (17, 1243020), (20, 1056567), (30, 704378), (34, 621510), (51, 414340), (60, 352189), (68, 310755), (85, 248604), (102, 207170), (170, 124302), (204, 103585), (255, 82868), (340, 62151), (510, 41434), (1020, 20717)]