20403621

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19051}}^1$

素因数の和:19081

約数の個数: 24

約数和(自身を含む): 35665344

約数和(自身を除く): 15261723

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19051, 57153, 133357, 171459, 323867, 400071, 971601, 1200213, 2267069, 2914803, 6801207, 20403621]

約数ペア:

[(1, 20403621), (3, 6801207), (7, 2914803), (9, 2267069), (17, 1200213), (21, 971601), (51, 400071), (63, 323867), (119, 171459), (153, 133357), (357, 57153), (1071, 19051)]