21881139

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5821}}^1$

素因数の和:6010

約数の個数: 16

約数和(自身を含む): 33534720

約数和(自身を除く): 11653581

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5821, 17463, 40747, 122241, 1041959, 3125877, 7293713, 21881139]

約数ペア:

[(1, 21881139), (3, 7293713), (7, 3125877), (21, 1041959), (179, 122241), (537, 40747), (1253, 17463), (3759, 5821)]