21088857

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{1063}}^1$

素因数の和:1472

約数の個数: 16

約数和(自身を含む): 29877120

約数和(自身を除く): 8788263

約数列:

[1, 3, 17, 51, 389, 1063, 1167, 3189, 6613, 18071, 19839, 54213, 413507, 1240521, 7029619, 21088857]

約数ペア:

[(1, 21088857), (3, 7029619), (17, 1240521), (51, 413507), (389, 54213), (1063, 19839), (1167, 18071), (3189, 6613)]