21511112

素因数分解:

$2^3\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1367}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 46293120

約数和(自身を除く): 24782008

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 281, 562, 1124, 1367, 1967, 2248, 2734, 3934, 5468, 7868, 9569, 10936, 15736, 19138, 38276, 76552, 384127, 768254, 1536508, 2688889, 3073016, 5377778, 10755556, 21511112]

約数ペア:

[(1, 21511112), (2, 10755556), (4, 5377778), (7, 3073016), (8, 2688889), (14, 1536508), (28, 768254), (56, 384127), (281, 76552), (562, 38276), (1124, 19138), (1367, 15736), (1967, 10936), (2248, 9569), (2734, 7868), (3934, 5468)]