19965505

素因数分解:

$5^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{863}}^1$

素因数の和:1536

約数の個数: 16

約数和(自身を含む): 27454464

約数和(自身を除く): 7488959

約数列:

[1, 5, 7, 35, 661, 863, 3305, 4315, 4627, 6041, 23135, 30205, 570443, 2852215, 3993101, 19965505]

約数ペア:

[(1, 19965505), (5, 3993101), (7, 2852215), (35, 570443), (661, 30205), (863, 23135), (3305, 6041), (4315, 4627)]