620140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{307}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 1319472

約数和(自身を除く): 699332

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 307, 404, 505, 614, 1010, 1228, 1535, 2020, 3070, 6140, 31007, 62014, 124028, 155035, 310070, 620140]

約数ペア:

[(1, 620140), (2, 310070), (4, 155035), (5, 124028), (10, 62014), (20, 31007), (101, 6140), (202, 3070), (307, 2020), (404, 1535), (505, 1228), (614, 1010)]