128971563

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{10427}}^1$

素因数の和:10487

約数の個数: 32

約数和(自身を含む): 213565440

約数和(自身を除く): 84593877

約数列:

[1, 3, 7, 19, 21, 31, 57, 93, 133, 217, 399, 589, 651, 1767, 4123, 10427, 12369, 31281, 72989, 198113, 218967, 323237, 594339, 969711, 1386791, 2262659, 4160373, 6141503, 6787977, 18424509, 42990521, 128971563]

約数ペア:

[(1, 128971563), (3, 42990521), (7, 18424509), (19, 6787977), (21, 6141503), (31, 4160373), (57, 2262659), (93, 1386791), (133, 969711), (217, 594339), (399, 323237), (589, 218967), (651, 198113), (1767, 72989), (4123, 31281), (10427, 12369)]