21671223

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19471}}^1$

素因数の和:19534

約数の個数: 16

約数和(自身を含む): 33647616

約数和(自身を除く): 11976393

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19471, 58413, 136297, 408891, 1031963, 3095889, 7223741, 21671223]

約数ペア:

[(1, 21671223), (3, 7223741), (7, 3095889), (21, 1031963), (53, 408891), (159, 136297), (371, 58413), (1113, 19471)]