21073285

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7231355

約数列:

[1, 5, 17, 29, 83, 85, 103, 145, 415, 493, 515, 1411, 1751, 2407, 2465, 2987, 7055, 8549, 8755, 12035, 14935, 40919, 42745, 50779, 145333, 204595, 247921, 253895, 726665, 1239605, 4214657, 21073285]

約数ペア:

[(1, 21073285), (5, 4214657), (17, 1239605), (29, 726665), (83, 253895), (85, 247921), (103, 204595), (145, 145333), (415, 50779), (493, 42745), (515, 40919), (1411, 14935), (1751, 12035), (2407, 8755), (2465, 8549), (2987, 7055)]