1287822020

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{209743}}^1$

素因数の和:210059

約数の個数: 24

約数和(自身を含む): 2713248384

約数和(自身を除く): 1425426364

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 6140, 209743, 419486, 838972, 1048715, 2097430, 4194860, 64391101, 128782202, 257564404, 321955505, 643911010, 1287822020]

約数ペア:

[(1, 1287822020), (2, 643911010), (4, 321955505), (5, 257564404), (10, 128782202), (20, 64391101), (307, 4194860), (614, 2097430), (1228, 1048715), (1535, 838972), (3070, 419486), (6140, 209743)]