19749784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{145219}}^1$

素因数の和:145242

約数の個数: 16

約数和(自身を含む): 39209400

約数和(自身を除く): 19459616

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 145219, 290438, 580876, 1161752, 2468723, 4937446, 9874892, 19749784]

約数ペア:

[(1, 19749784), (2, 9874892), (4, 4937446), (8, 2468723), (17, 1161752), (34, 580876), (68, 290438), (136, 145219)]