20309716

素因数分解:

$2^2\times 7^3\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 21824684

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 113, 131, 196, 226, 262, 343, 452, 524, 686, 791, 917, 1372, 1582, 1834, 3164, 3668, 5537, 6419, 11074, 12838, 14803, 22148, 25676, 29606, 38759, 44933, 59212, 77518, 89866, 103621, 155036, 179732, 207242, 414484, 725347, 1450694, 2901388, 5077429, 10154858, 20309716]

約数ペア:

[(1, 20309716), (2, 10154858), (4, 5077429), (7, 2901388), (14, 1450694), (28, 725347), (49, 414484), (98, 207242), (113, 179732), (131, 155036), (196, 103621), (226, 89866), (262, 77518), (343, 59212), (452, 44933), (524, 38759), (686, 29606), (791, 25676), (917, 22148), (1372, 14803), (1582, 12838), (1834, 11074), (3164, 6419), (3668, 5537)]