19935580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1087}}^1$

素因数の和:1234

約数の個数: 48

約数和(自身を含む): 48254976

約数和(自身を除く): 28319396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1087, 1310, 1834, 2174, 2620, 3668, 4348, 4585, 5435, 7609, 9170, 10870, 15218, 18340, 21740, 30436, 38045, 76090, 142397, 152180, 284794, 569588, 711985, 996779, 1423970, 1993558, 2847940, 3987116, 4983895, 9967790, 19935580]

約数ペア:

[(1, 19935580), (2, 9967790), (4, 4983895), (5, 3987116), (7, 2847940), (10, 1993558), (14, 1423970), (20, 996779), (28, 711985), (35, 569588), (70, 284794), (131, 152180), (140, 142397), (262, 76090), (524, 38045), (655, 30436), (917, 21740), (1087, 18340), (1310, 15218), (1834, 10870), (2174, 9170), (2620, 7609), (3668, 5435), (4348, 4585)]