221617256

素因数分解:

$2^3\times 7^1\times {\mathrm{3957451}}^1$

素因数の和:3957464

約数の個数: 16

約数和(自身を含む): 474894240

約数和(自身を除く): 253276984

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 3957451, 7914902, 15829804, 27702157, 31659608, 55404314, 110808628, 221617256]

約数ペア:

[(1, 221617256), (2, 110808628), (4, 55404314), (7, 31659608), (8, 27702157), (14, 15829804), (28, 7914902), (56, 3957451)]