21034881

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17573}}^1$

素因数の和:17605

約数の個数: 24

約数和(自身を含む): 36553920

約数和(自身を除く): 15519039

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17573, 52719, 123011, 158157, 333887, 369033, 1001661, 1107099, 2337209, 3004983, 7011627, 21034881]

約数ペア:

[(1, 21034881), (3, 7011627), (7, 3004983), (9, 2337209), (19, 1107099), (21, 1001661), (57, 369033), (63, 333887), (133, 158157), (171, 123011), (399, 52719), (1197, 17573)]