21291453

素因数分解:

$3^2\times {\mathrm{151}}^1\times {\mathrm{15667}}^1$

素因数の和:15824

約数の個数: 12

約数和(自身を含む): 30959968

約数和(自身を除く): 9668515

約数列:

[1, 3, 9, 151, 453, 1359, 15667, 47001, 141003, 2365717, 7097151, 21291453]

約数ペア:

[(1, 21291453), (3, 7097151), (9, 2365717), (151, 141003), (453, 47001), (1359, 15667)]