81684770

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{18439}}^1$

素因数の和:18889

約数の個数: 16

約数和(自身を含む): 147372480

約数和(自身を除く): 65687710

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 18439, 36878, 92195, 184390, 8168477, 16336954, 40842385, 81684770]

約数ペア:

[(1, 81684770), (2, 40842385), (5, 16336954), (10, 8168477), (443, 184390), (886, 92195), (2215, 36878), (4430, 18439)]