19780540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76079}}^1$

素因数の和:76101

約数の個数: 24

約数和(自身を含む): 44735040

約数和(自身を除く): 24954500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76079, 152158, 304316, 380395, 760790, 989027, 1521580, 1978054, 3956108, 4945135, 9890270, 19780540]

約数ペア:

[(1, 19780540), (2, 9890270), (4, 4945135), (5, 3956108), (10, 1978054), (13, 1521580), (20, 989027), (26, 760790), (52, 380395), (65, 304316), (130, 152158), (260, 76079)]