20824209

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1933}}^1$

素因数の和:1971

約数の個数: 40

約数和(自身を含む): 37442240

約数和(自身を除く): 16618031

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 1933, 3591, 5799, 10773, 13531, 17397, 36727, 40593, 52191, 110181, 121779, 156573, 257089, 330543, 365337, 771267, 991629, 1096011, 2313801, 2974887, 6941403, 20824209]

約数ペア:

[(1, 20824209), (3, 6941403), (7, 2974887), (9, 2313801), (19, 1096011), (21, 991629), (27, 771267), (57, 365337), (63, 330543), (81, 257089), (133, 156573), (171, 121779), (189, 110181), (399, 52191), (513, 40593), (567, 36727), (1197, 17397), (1539, 13531), (1933, 10773), (3591, 5799)]