21330801

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 36

約数和(自身を含む): 33524400

約数和(自身を除く): 12193599

約数列:

[1, 3, 9, 17, 51, 59, 139, 153, 177, 289, 417, 531, 867, 1003, 1251, 2363, 2601, 3009, 7089, 8201, 9027, 17051, 21267, 24603, 40171, 51153, 73809, 120513, 139417, 153459, 361539, 418251, 1254753, 2370089, 7110267, 21330801]

約数ペア:

[(1, 21330801), (3, 7110267), (9, 2370089), (17, 1254753), (51, 418251), (59, 361539), (139, 153459), (153, 139417), (177, 120513), (289, 73809), (417, 51153), (531, 40171), (867, 24603), (1003, 21267), (1251, 17051), (2363, 9027), (2601, 8201), (3009, 7089)]