90101090

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{89209}}^1$

素因数の和:89317

約数の個数: 16

約数和(自身を含む): 163789560

約数和(自身を除く): 73688470

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 89209, 178418, 446045, 892090, 9010109, 18020218, 45050545, 90101090]

約数ペア:

[(1, 90101090), (2, 45050545), (5, 18020218), (10, 9010109), (101, 892090), (202, 446045), (505, 178418), (1010, 89209)]