81318410

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{91369}}^1$

素因数の和:91465

約数の個数: 16

約数和(自身を含む): 148019400

約数和(自身を除く): 66700990

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 91369, 182738, 456845, 913690, 8131841, 16263682, 40659205, 81318410]

約数ペア:

[(1, 81318410), (2, 40659205), (5, 16263682), (10, 8131841), (89, 913690), (178, 456845), (445, 182738), (890, 91369)]