21713517

素因数分解:

$3^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{929}}^1$

素因数の和:1002

約数の個数: 36

約数和(自身を含む): 37213020

約数和(自身を除く): 15499503

約数列:

[1, 3, 7, 9, 21, 49, 53, 63, 147, 159, 371, 441, 477, 929, 1113, 2597, 2787, 3339, 6503, 7791, 8361, 19509, 23373, 45521, 49237, 58527, 136563, 147711, 344659, 409689, 443133, 1033977, 2412613, 3101931, 7237839, 21713517]

約数ペア:

[(1, 21713517), (3, 7237839), (7, 3101931), (9, 2412613), (21, 1033977), (49, 443133), (53, 409689), (63, 344659), (147, 147711), (159, 136563), (371, 58527), (441, 49237), (477, 45521), (929, 23373), (1113, 19509), (2597, 8361), (2787, 7791), (3339, 6503)]