20838573

素因数分解:

$3^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{829}}^1$

素因数の和:871

約数の個数: 48

約数和(自身を含む): 37848000

約数和(自身を除く): 17009427

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 133, 147, 171, 189, 399, 441, 513, 829, 931, 1197, 1323, 2487, 2793, 3591, 5803, 7461, 8379, 15751, 17409, 22383, 25137, 40621, 47253, 52227, 110257, 121863, 141759, 156681, 330771, 365589, 425277, 771799, 992313, 1096767, 2315397, 2976939, 6946191, 20838573]

約数ペア:

[(1, 20838573), (3, 6946191), (7, 2976939), (9, 2315397), (19, 1096767), (21, 992313), (27, 771799), (49, 425277), (57, 365589), (63, 330771), (133, 156681), (147, 141759), (171, 121863), (189, 110257), (399, 52227), (441, 47253), (513, 40621), (829, 25137), (931, 22383), (1197, 17409), (1323, 15751), (2487, 8379), (2793, 7461), (3591, 5803)]