21062718

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16481}}^1$

素因数の和:16560

約数の個数: 24

約数和(自身を含む): 46281456

約数和(自身を除く): 25218738

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16481, 32962, 49443, 98886, 148329, 296658, 1170151, 2340302, 3510453, 7020906, 10531359, 21062718]

約数ペア:

[(1, 21062718), (2, 10531359), (3, 7020906), (6, 3510453), (9, 2340302), (18, 1170151), (71, 296658), (142, 148329), (213, 98886), (426, 49443), (639, 32962), (1278, 16481)]