21700336

素因数分解:

$2^4\times 7^2\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:422

約数の個数: 60

約数和(自身を含む): 49617360

約数和(自身を除く): 27917024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 89, 98, 112, 178, 196, 311, 356, 392, 622, 623, 712, 784, 1244, 1246, 1424, 2177, 2488, 2492, 4354, 4361, 4976, 4984, 8708, 8722, 9968, 15239, 17416, 17444, 27679, 30478, 34832, 34888, 55358, 60956, 69776, 110716, 121912, 193753, 221432, 243824, 387506, 442864, 775012, 1356271, 1550024, 2712542, 3100048, 5425084, 10850168, 21700336]

約数ペア:

[(1, 21700336), (2, 10850168), (4, 5425084), (7, 3100048), (8, 2712542), (14, 1550024), (16, 1356271), (28, 775012), (49, 442864), (56, 387506), (89, 243824), (98, 221432), (112, 193753), (178, 121912), (196, 110716), (311, 69776), (356, 60956), (392, 55358), (622, 34888), (623, 34832), (712, 30478), (784, 27679), (1244, 17444), (1246, 17416), (1424, 15239), (2177, 9968), (2488, 8722), (2492, 8708), (4354, 4984), (4361, 4976)]