19809442

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{1021}}^1$

素因数の和:1221

約数の個数: 16

約数和(自身を含む): 30353400

約数和(自身を除く): 10543958

約数列:

[1, 2, 89, 109, 178, 218, 1021, 2042, 9701, 19402, 90869, 111289, 181738, 222578, 9904721, 19809442]

約数ペア:

[(1, 19809442), (2, 9904721), (89, 222578), (109, 181738), (178, 111289), (218, 90869), (1021, 19402), (2042, 9701)]