21950715

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20611}}^1$

素因数の和:20690

約数の個数: 16

約数和(自身を含む): 35617536

約数和(自身を除く): 13666821

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20611, 61833, 103055, 309165, 1463381, 4390143, 7316905, 21950715]

約数ペア:

[(1, 21950715), (3, 7316905), (5, 4390143), (15, 1463381), (71, 309165), (213, 103055), (355, 61833), (1065, 20611)]