21048075

素因数分解:

$3^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{673}}^1$

素因数の和:828

約数の個数: 36

約数和(自身を含む): 38027080

約数和(自身を除く): 16979005

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 139, 225, 417, 673, 695, 1251, 2019, 2085, 3365, 3475, 6057, 6255, 10095, 10425, 16825, 30285, 31275, 50475, 93547, 151425, 280641, 467735, 841923, 1403205, 2338675, 4209615, 7016025, 21048075]

約数ペア:

[(1, 21048075), (3, 7016025), (5, 4209615), (9, 2338675), (15, 1403205), (25, 841923), (45, 467735), (75, 280641), (139, 151425), (225, 93547), (417, 50475), (673, 31275), (695, 30285), (1251, 16825), (2019, 10425), (2085, 10095), (3365, 6255), (3475, 6057)]