21000980231

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{624119}}^1$

素因数の和:624179

約数の個数: 32

約数和(自身を含む): 28759449600

約数和(自身を除く): 7758469369

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 1463, 1771, 3059, 4807, 33649, 624119, 4368833, 6865309, 11858261, 14354737, 48057163, 83007827, 100483159, 130440871, 157902107, 272740003, 913086097, 1105314749, 1909180021, 3000140033, 21000980231]

約数ペア:

[(1, 21000980231), (7, 3000140033), (11, 1909180021), (19, 1105314749), (23, 913086097), (77, 272740003), (133, 157902107), (161, 130440871), (209, 100483159), (253, 83007827), (437, 48057163), (1463, 14354737), (1771, 11858261), (3059, 6865309), (4807, 4368833), (33649, 624119)]