9890020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1723}}^1$

素因数の和:1780

約数の個数: 48

約数和(自身を含む): 24329088

約数和(自身を除く): 14439068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 1723, 2870, 3446, 5740, 6892, 8615, 12061, 17230, 24122, 34460, 48244, 60305, 70643, 120610, 141286, 241220, 282572, 353215, 494501, 706430, 989002, 1412860, 1978004, 2472505, 4945010, 9890020]

約数ペア:

[(1, 9890020), (2, 4945010), (4, 2472505), (5, 1978004), (7, 1412860), (10, 989002), (14, 706430), (20, 494501), (28, 353215), (35, 282572), (41, 241220), (70, 141286), (82, 120610), (140, 70643), (164, 60305), (205, 48244), (287, 34460), (410, 24122), (574, 17230), (820, 12061), (1148, 8615), (1435, 6892), (1723, 5740), (2870, 3446)]