20724261

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:876

約数の個数: 16

約数和(自身を含む): 28252800

約数和(自身を除く): 7528539

約数列:

[1, 3, 71, 149, 213, 447, 653, 1959, 10579, 31737, 46363, 97297, 139089, 291891, 6908087, 20724261]

約数ペア:

[(1, 20724261), (3, 6908087), (71, 291891), (149, 139089), (213, 97297), (447, 46363), (653, 31737), (1959, 10579)]