21262881

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{1601}}^1$

素因数の和:1856

約数の個数: 16

約数和(自身を含む): 29989440

約数和(自身を除く): 8726559

約数列:

[1, 3, 19, 57, 233, 699, 1601, 4427, 4803, 13281, 30419, 91257, 373033, 1119099, 7087627, 21262881]

約数ペア:

[(1, 21262881), (3, 7087627), (19, 1119099), (57, 373033), (233, 91257), (699, 30419), (1601, 13281), (4427, 4803)]