81115490

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{91141}}^1$

素因数の和:91237

約数の個数: 16

約数和(自身を含む): 147650040

約数和(自身を除く): 66534550

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 91141, 182282, 455705, 911410, 8111549, 16223098, 40557745, 81115490]

約数ペア:

[(1, 81115490), (2, 40557745), (5, 16223098), (10, 8111549), (89, 911410), (178, 455705), (445, 182282), (890, 91141)]