20704821

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{1217}}^1$

素因数の和:1380

約数の個数: 16

約数和(自身を含む): 28413504

約数和(自身を除く): 7708683

約数列:

[1, 3, 53, 107, 159, 321, 1217, 3651, 5671, 17013, 64501, 130219, 193503, 390657, 6901607, 20704821]

約数ペア:

[(1, 20704821), (3, 6901607), (53, 390657), (107, 193503), (159, 130219), (321, 64501), (1217, 17013), (3651, 5671)]