81978554

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{136177}}^1$

素因数の和:136229

約数の個数: 16

約数和(自身を含む): 143803968

約数和(自身を除く): 61825414

約数列:

[1, 2, 7, 14, 43, 86, 301, 602, 136177, 272354, 953239, 1906478, 5855611, 11711222, 40989277, 81978554]

約数ペア:

[(1, 81978554), (2, 40989277), (7, 11711222), (14, 5855611), (43, 1906478), (86, 953239), (301, 272354), (602, 136177)]