18980773

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3803}}^1$

素因数の和:3864

約数の個数: 16

約数和(自身を含む): 23371776

約数和(自身を除く): 4391003

約数列:

[1, 7, 23, 31, 161, 217, 713, 3803, 4991, 26621, 87469, 117893, 612283, 825251, 2711539, 18980773]

約数ペア:

[(1, 18980773), (7, 2711539), (23, 825251), (31, 612283), (161, 117893), (217, 87469), (713, 26621), (3803, 4991)]