890228746

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{400643}}^1$

素因数の和:400757

約数の個数: 16

約数和(自身を含む): 1471164768

約数和(自身を除く): 580936022

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 400643, 801286, 4407073, 8814146, 40464943, 80929886, 445114373, 890228746]

約数ペア:

[(1, 890228746), (2, 445114373), (11, 80929886), (22, 40464943), (101, 8814146), (202, 4407073), (1111, 801286), (2222, 400643)]