21286587

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6803}}^1$

素因数の和:6962

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 11372613

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6803, 20409, 47621, 142863, 1013647, 3040941, 7095529, 21286587]

約数ペア:

[(1, 21286587), (3, 7095529), (7, 3040941), (21, 1013647), (149, 142863), (447, 47621), (1043, 20409), (3129, 6803)]