55213221

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1949}}^1$

素因数の和:2049

約数の個数: 32

約数和(自身を含む): 89856000

約数和(自身を除く): 34642779

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 1349, 1491, 1949, 4047, 5847, 9443, 13643, 28329, 37031, 40929, 111093, 138379, 259217, 415137, 777651, 968653, 2629201, 2905959, 7887603, 18404407, 55213221]

約数ペア:

[(1, 55213221), (3, 18404407), (7, 7887603), (19, 2905959), (21, 2629201), (57, 968653), (71, 777651), (133, 415137), (213, 259217), (399, 138379), (497, 111093), (1349, 40929), (1491, 37031), (1949, 28329), (4047, 13643), (5847, 9443)]