20339060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1109}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 49230720

約数和(自身を除く): 28891660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1109, 1310, 1834, 2218, 2620, 3668, 4436, 4585, 5545, 7763, 9170, 11090, 15526, 18340, 22180, 31052, 38815, 77630, 145279, 155260, 290558, 581116, 726395, 1016953, 1452790, 2033906, 2905580, 4067812, 5084765, 10169530, 20339060]

約数ペア:

[(1, 20339060), (2, 10169530), (4, 5084765), (5, 4067812), (7, 2905580), (10, 2033906), (14, 1452790), (20, 1016953), (28, 726395), (35, 581116), (70, 290558), (131, 155260), (140, 145279), (262, 77630), (524, 38815), (655, 31052), (917, 22180), (1109, 18340), (1310, 15526), (1834, 11090), (2218, 9170), (2620, 7763), (3668, 5545), (4436, 4585)]