21981099

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 12601941

約数列:

[1, 3, 7, 21, 59, 113, 157, 177, 339, 413, 471, 791, 1099, 1239, 2373, 3297, 6667, 9263, 17741, 20001, 27789, 46669, 53223, 64841, 124187, 140007, 194523, 372561, 1046719, 3140157, 7327033, 21981099]

約数ペア:

[(1, 21981099), (3, 7327033), (7, 3140157), (21, 1046719), (59, 372561), (113, 194523), (157, 140007), (177, 124187), (339, 64841), (413, 53223), (471, 46669), (791, 27789), (1099, 20001), (1239, 17741), (2373, 9263), (3297, 6667)]