21056685

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1301}}^1$

素因数の和:1405

約数の個数: 32

約数和(自身を含む): 36747648

約数和(自身を除く): 15690963

約数列:

[1, 3, 5, 13, 15, 39, 65, 83, 195, 249, 415, 1079, 1245, 1301, 3237, 3903, 5395, 6505, 16185, 16913, 19515, 50739, 84565, 107983, 253695, 323949, 539915, 1403779, 1619745, 4211337, 7018895, 21056685]

約数ペア:

[(1, 21056685), (3, 7018895), (5, 4211337), (13, 1619745), (15, 1403779), (39, 539915), (65, 323949), (83, 253695), (195, 107983), (249, 84565), (415, 50739), (1079, 19515), (1245, 16913), (1301, 16185), (3237, 6505), (3903, 5395)]