21143793

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 31882752

約数和(自身を除く): 10738959

約数列:

[1, 3, 11, 33, 67, 73, 131, 201, 219, 393, 737, 803, 1441, 2211, 2409, 4323, 4891, 8777, 9563, 14673, 26331, 28689, 53801, 96547, 105193, 161403, 289641, 315579, 640721, 1922163, 7047931, 21143793]

約数ペア:

[(1, 21143793), (3, 7047931), (11, 1922163), (33, 640721), (67, 315579), (73, 289641), (131, 161403), (201, 105193), (219, 96547), (393, 53801), (737, 28689), (803, 26331), (1441, 14673), (2211, 9563), (2409, 8777), (4323, 4891)]