21238497

素因数分解:

$3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1091}}^1$

素因数の和:1210

約数の個数: 32

約数和(自身を含む): 36341760

約数和(自身を除く): 15103263

約数列:

[1, 3, 7, 9, 21, 27, 63, 103, 189, 309, 721, 927, 1091, 2163, 2781, 3273, 6489, 7637, 9819, 19467, 22911, 29457, 68733, 112373, 206199, 337119, 786611, 1011357, 2359833, 3034071, 7079499, 21238497]

約数ペア:

[(1, 21238497), (3, 7079499), (7, 3034071), (9, 2359833), (21, 1011357), (27, 786611), (63, 337119), (103, 206199), (189, 112373), (309, 68733), (721, 29457), (927, 22911), (1091, 19467), (2163, 9819), (2781, 7637), (3273, 6489)]