16399475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{821}}^1$

素因数の和:895

約数の個数: 24

約数和(自身を含む): 22016448

約数和(自身を除く): 5616973

約数列:

[1, 5, 17, 25, 47, 85, 235, 425, 799, 821, 1175, 3995, 4105, 13957, 19975, 20525, 38587, 69785, 192935, 348925, 655979, 964675, 3279895, 16399475]

約数ペア:

[(1, 16399475), (5, 3279895), (17, 964675), (25, 655979), (47, 348925), (85, 192935), (235, 69785), (425, 38587), (799, 20525), (821, 19975), (1175, 13957), (3995, 4105)]