21991116

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{261799}}^1$

素因数の和:261813

約数の個数: 24

約数和(自身を含む): 58643200

約数和(自身を除く): 36652084

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 261799, 523598, 785397, 1047196, 1570794, 1832593, 3141588, 3665186, 5497779, 7330372, 10995558, 21991116]

約数ペア:

[(1, 21991116), (2, 10995558), (3, 7330372), (4, 5497779), (6, 3665186), (7, 3141588), (12, 1832593), (14, 1570794), (21, 1047196), (28, 785397), (42, 523598), (84, 261799)]