21002715

素因数分解:

$3^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{829}}^1$

素因数の和:1403

約数の個数: 24

約数和(自身を含む): 36513360

約数和(自身を除く): 15510645

約数列:

[1, 3, 5, 9, 15, 45, 563, 829, 1689, 2487, 2815, 4145, 5067, 7461, 8445, 12435, 25335, 37305, 466727, 1400181, 2333635, 4200543, 7000905, 21002715]

約数ペア:

[(1, 21002715), (3, 7000905), (5, 4200543), (9, 2333635), (15, 1400181), (45, 466727), (563, 37305), (829, 25335), (1689, 12435), (2487, 8445), (2815, 7461), (4145, 5067)]