21491337

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{883}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 35077120

約数和(自身を除く): 13585783

約数列:

[1, 3, 7, 19, 21, 57, 61, 133, 183, 399, 427, 883, 1159, 1281, 2649, 3477, 6181, 8113, 16777, 18543, 24339, 50331, 53863, 117439, 161589, 352317, 377041, 1023397, 1131123, 3070191, 7163779, 21491337]

約数ペア:

[(1, 21491337), (3, 7163779), (7, 3070191), (19, 1131123), (21, 1023397), (57, 377041), (61, 352317), (133, 161589), (183, 117439), (399, 53863), (427, 50331), (883, 24339), (1159, 18543), (1281, 16777), (2649, 8113), (3477, 6181)]