20946303

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{307}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 37551360

約数和(自身を除く): 16605057

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 307, 361, 399, 513, 921, 1083, 1197, 2149, 2527, 2763, 3249, 3591, 5833, 6447, 7581, 8289, 9747, 17499, 19341, 22743, 40831, 52497, 58023, 68229, 110827, 122493, 157491, 332481, 367479, 775789, 997443, 1102437, 2327367, 2992329, 6982101, 20946303]

約数ペア:

[(1, 20946303), (3, 6982101), (7, 2992329), (9, 2327367), (19, 1102437), (21, 997443), (27, 775789), (57, 367479), (63, 332481), (133, 157491), (171, 122493), (189, 110827), (307, 68229), (361, 58023), (399, 52497), (513, 40831), (921, 22743), (1083, 19341), (1197, 17499), (2149, 9747), (2527, 8289), (2763, 7581), (3249, 6447), (3591, 5833)]