21765405

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 35831808

約数和(自身を除く): 14066403

約数列:

[1, 3, 5, 15, 71, 107, 191, 213, 321, 355, 535, 573, 955, 1065, 1605, 2865, 7597, 13561, 20437, 22791, 37985, 40683, 61311, 67805, 102185, 113955, 203415, 306555, 1451027, 4353081, 7255135, 21765405]

約数ペア:

[(1, 21765405), (3, 7255135), (5, 4353081), (15, 1451027), (71, 306555), (107, 203415), (191, 113955), (213, 102185), (321, 67805), (355, 61311), (535, 40683), (573, 37985), (955, 22791), (1065, 20437), (1605, 13561), (2865, 7597)]