21784504

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5479}}^1$

素因数の和:5563

約数の個数: 32

約数和(自身を含む): 47347200

約数和(自身を除く): 25562696

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5479, 10958, 21916, 38353, 43832, 76706, 153412, 306824, 389009, 778018, 1556036, 2723063, 3112072, 5446126, 10892252, 21784504]

約数ペア:

[(1, 21784504), (2, 10892252), (4, 5446126), (7, 3112072), (8, 2723063), (14, 1556036), (28, 778018), (56, 389009), (71, 306824), (142, 153412), (284, 76706), (497, 43832), (568, 38353), (994, 21916), (1988, 10958), (3976, 5479)]