80421380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{309313}}^1$

素因数の和:309335

約数の個数: 24

約数和(自身を含む): 181876632

約数和(自身を除く): 101455252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 309313, 618626, 1237252, 1546565, 3093130, 4021069, 6186260, 8042138, 16084276, 20105345, 40210690, 80421380]

約数ペア:

[(1, 80421380), (2, 40210690), (4, 20105345), (5, 16084276), (10, 8042138), (13, 6186260), (20, 4021069), (26, 3093130), (52, 1546565), (65, 1237252), (130, 618626), (260, 309313)]