21221704

素因数分解:

$2^3\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1259}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 47401200

約数和(自身を除く): 26179496

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 49, 56, 86, 98, 172, 196, 301, 344, 392, 602, 1204, 1259, 2107, 2408, 2518, 4214, 5036, 8428, 8813, 10072, 16856, 17626, 35252, 54137, 61691, 70504, 108274, 123382, 216548, 246764, 378959, 433096, 493528, 757918, 1515836, 2652713, 3031672, 5305426, 10610852, 21221704]

約数ペア:

[(1, 21221704), (2, 10610852), (4, 5305426), (7, 3031672), (8, 2652713), (14, 1515836), (28, 757918), (43, 493528), (49, 433096), (56, 378959), (86, 246764), (98, 216548), (172, 123382), (196, 108274), (301, 70504), (344, 61691), (392, 54137), (602, 35252), (1204, 17626), (1259, 16856), (2107, 10072), (2408, 8813), (2518, 8428), (4214, 5036)]