978889180

素因数分解:

$2^2\times 5^1\times {\mathrm{3943}}^1\times {\mathrm{12413}}^1$

素因数の和:16365

約数の個数: 24

約数和(自身を含む): 2056354272

約数和(自身を除く): 1077465092

約数列:

[1, 2, 4, 5, 10, 20, 3943, 7886, 12413, 15772, 19715, 24826, 39430, 49652, 62065, 78860, 124130, 248260, 48944459, 97888918, 195777836, 244722295, 489444590, 978889180]

約数ペア:

[(1, 978889180), (2, 489444590), (4, 244722295), (5, 195777836), (10, 97888918), (20, 48944459), (3943, 248260), (7886, 124130), (12413, 78860), (15772, 62065), (19715, 49652), (24826, 39430)]