21177205

素因数分解:

$5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{941}}^1$

素因数の和:1596

約数の個数: 16

約数和(自身を含む): 29119104

約数和(自身を除く): 7941899

約数列:

[1, 5, 7, 35, 643, 941, 3215, 4501, 4705, 6587, 22505, 32935, 605063, 3025315, 4235441, 21177205]

約数ペア:

[(1, 21177205), (5, 4235441), (7, 3025315), (35, 605063), (643, 32935), (941, 22505), (3215, 6587), (4501, 4705)]