21083825

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{373}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 33390720

約数和(自身を除く): 12306895

約数列:

[1, 5, 7, 17, 19, 25, 35, 85, 95, 119, 133, 175, 323, 373, 425, 475, 595, 665, 1615, 1865, 2261, 2611, 2975, 3325, 6341, 7087, 8075, 9325, 11305, 13055, 31705, 35435, 44387, 49609, 56525, 65275, 120479, 158525, 177175, 221935, 248045, 602395, 843353, 1109675, 1240225, 3011975, 4216765, 21083825]

約数ペア:

[(1, 21083825), (5, 4216765), (7, 3011975), (17, 1240225), (19, 1109675), (25, 843353), (35, 602395), (85, 248045), (95, 221935), (119, 177175), (133, 158525), (175, 120479), (323, 65275), (373, 56525), (425, 49609), (475, 44387), (595, 35435), (665, 31705), (1615, 13055), (1865, 11305), (2261, 9325), (2611, 8075), (2975, 7087), (3325, 6341)]