81696688

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{25919}}^1$

素因数の和:26124

約数の個数: 20

約数和(自身を含む): 159096960

約数和(自身を除く): 77400272

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 25919, 51838, 103676, 207352, 414704, 5106043, 10212086, 20424172, 40848344, 81696688]

約数ペア:

[(1, 81696688), (2, 40848344), (4, 20424172), (8, 10212086), (16, 5106043), (197, 414704), (394, 207352), (788, 103676), (1576, 51838), (3152, 25919)]