20603961

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2459}}^1$

素因数の和:2498

約数の個数: 36

約数和(自身を含む): 36457200

約数和(自身を除く): 15853239

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2459, 2793, 7377, 8379, 17213, 22131, 46721, 51639, 120491, 140163, 154917, 327047, 361473, 420489, 981141, 1084419, 2289329, 2943423, 6867987, 20603961]

約数ペア:

[(1, 20603961), (3, 6867987), (7, 2943423), (9, 2289329), (19, 1084419), (21, 981141), (49, 420489), (57, 361473), (63, 327047), (133, 154917), (147, 140163), (171, 120491), (399, 51639), (441, 46721), (931, 22131), (1197, 17213), (2459, 8379), (2793, 7377)]