80943980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311323}}^1$

素因数の和:311345

約数の個数: 24

約数和(自身を含む): 183058512

約数和(自身を除く): 102114532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311323, 622646, 1245292, 1556615, 3113230, 4047199, 6226460, 8094398, 16188796, 20235995, 40471990, 80943980]

約数ペア:

[(1, 80943980), (2, 40471990), (4, 20235995), (5, 16188796), (10, 8094398), (13, 6226460), (20, 4047199), (26, 3113230), (52, 1556615), (65, 1245292), (130, 622646), (260, 311323)]