21471903

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2207}}^1$

素因数の和:2283

約数の個数: 24

約数和(自身を含む): 33067008

約数和(自身を除く): 11595105

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2207, 3243, 6621, 9729, 19863, 50761, 103729, 152283, 311187, 456849, 933561, 2385767, 7157301, 21471903]

約数ペア:

[(1, 21471903), (3, 7157301), (9, 2385767), (23, 933561), (47, 456849), (69, 311187), (141, 152283), (207, 103729), (423, 50761), (1081, 19863), (2207, 9729), (3243, 6621)]