21217066

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:330

約数の個数: 32

約数和(自身を含む): 35516880

約数和(自身を除く): 14299814

約数列:

[1, 2, 13, 26, 53, 89, 106, 173, 178, 346, 689, 1157, 1378, 2249, 2314, 4498, 4717, 9169, 9434, 15397, 18338, 30794, 61321, 119197, 122642, 200161, 238394, 400322, 816041, 1632082, 10608533, 21217066]

約数ペア:

[(1, 21217066), (2, 10608533), (13, 1632082), (26, 816041), (53, 400322), (89, 238394), (106, 200161), (173, 122642), (178, 119197), (346, 61321), (689, 30794), (1157, 18338), (1378, 15397), (2249, 9434), (2314, 9169), (4498, 4717)]