18916325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{947}}^1$

素因数の和:1021

約数の個数: 24

約数和(自身を含む): 25391232

約数和(自身を除く): 6474907

約数列:

[1, 5, 17, 25, 47, 85, 235, 425, 799, 947, 1175, 3995, 4735, 16099, 19975, 23675, 44509, 80495, 222545, 402475, 756653, 1112725, 3783265, 18916325]

約数ペア:

[(1, 18916325), (5, 3783265), (17, 1112725), (25, 756653), (47, 402475), (85, 222545), (235, 80495), (425, 44509), (799, 23675), (947, 19975), (1175, 16099), (3995, 4735)]