21743309

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 26511840

約数和(自身を除く): 4768531

約数列:

[1, 7, 37, 49, 67, 179, 259, 469, 1253, 1813, 2479, 3283, 6623, 8771, 11993, 17353, 46361, 83951, 121471, 324527, 443741, 587657, 3106187, 21743309]

約数ペア:

[(1, 21743309), (7, 3106187), (37, 587657), (49, 443741), (67, 324527), (179, 121471), (259, 83951), (469, 46361), (1253, 17353), (1813, 11993), (2479, 8771), (3283, 6623)]