20758164

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 57724128

約数和(自身を除く): 36965964

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 821, 903, 1204, 1642, 1806, 2107, 2463, 3284, 3612, 4214, 4926, 5747, 6321, 8428, 9852, 11494, 12642, 17241, 22988, 25284, 34482, 35303, 40229, 68964, 70606, 80458, 105909, 120687, 141212, 160916, 211818, 241374, 247121, 423636, 482748, 494242, 741363, 988484, 1482726, 1729847, 2965452, 3459694, 5189541, 6919388, 10379082, 20758164]

約数ペア:

[(1, 20758164), (2, 10379082), (3, 6919388), (4, 5189541), (6, 3459694), (7, 2965452), (12, 1729847), (14, 1482726), (21, 988484), (28, 741363), (42, 494242), (43, 482748), (49, 423636), (84, 247121), (86, 241374), (98, 211818), (129, 160916), (147, 141212), (172, 120687), (196, 105909), (258, 80458), (294, 70606), (301, 68964), (516, 40229), (588, 35303), (602, 34482), (821, 25284), (903, 22988), (1204, 17241), (1642, 12642), (1806, 11494), (2107, 9852), (2463, 8428), (3284, 6321), (3612, 5747), (4214, 4926)]