21088309

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5039051

約数列:

[1, 11, 19, 23, 41, 107, 209, 253, 437, 451, 779, 943, 1177, 2033, 2461, 4387, 4807, 8569, 10373, 17917, 22363, 27071, 46759, 48257, 83353, 100901, 197087, 514349, 916883, 1109911, 1917119, 21088309]

約数ペア:

[(1, 21088309), (11, 1917119), (19, 1109911), (23, 916883), (41, 514349), (107, 197087), (209, 100901), (253, 83353), (437, 48257), (451, 46759), (779, 27071), (943, 22363), (1177, 17917), (2033, 10373), (2461, 8569), (4387, 4807)]