18784540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{49433}}^1$

素因数の和:49461

約数の個数: 24

約数和(自身を含む): 41524560

約数和(自身を除く): 22740020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 49433, 98866, 197732, 247165, 494330, 939227, 988660, 1878454, 3756908, 4696135, 9392270, 18784540]

約数ペア:

[(1, 18784540), (2, 9392270), (4, 4696135), (5, 3756908), (10, 1878454), (19, 988660), (20, 939227), (38, 494330), (76, 247165), (95, 197732), (190, 98866), (380, 49433)]