7211278221

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{90821}}^1$

素因数の和:91049

約数の個数: 32

約数和(自身を含む): 11625216000

約数和(自身を除く): 4413937779

約数列:

[1, 3, 7, 19, 21, 57, 133, 199, 399, 597, 1393, 3781, 4179, 11343, 26467, 79401, 90821, 272463, 635747, 1725599, 1907241, 5176797, 12079193, 18073379, 36237579, 54220137, 126513653, 343394201, 379540959, 1030182603, 2403759407, 7211278221]

約数ペア:

[(1, 7211278221), (3, 2403759407), (7, 1030182603), (19, 379540959), (21, 343394201), (57, 126513653), (133, 54220137), (199, 36237579), (399, 18073379), (597, 12079193), (1393, 5176797), (3781, 1907241), (4179, 1725599), (11343, 635747), (26467, 272463), (79401, 90821)]