80904980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311173}}^1$

素因数の和:311195

約数の個数: 24

約数和(自身を含む): 182970312

約数和(自身を除く): 102065332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311173, 622346, 1244692, 1555865, 3111730, 4045249, 6223460, 8090498, 16180996, 20226245, 40452490, 80904980]

約数ペア:

[(1, 80904980), (2, 40452490), (4, 20226245), (5, 16180996), (10, 8090498), (13, 6223460), (20, 4045249), (26, 3111730), (52, 1555865), (65, 1244692), (130, 622346), (260, 311173)]