19880478

素因数分解:

$2^1\times 3^4\times {\mathrm{122719}}^1$

素因数の和:122733

約数の個数: 20

約数和(自身を含む): 44547360

約数和(自身を除く): 24666882

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 122719, 245438, 368157, 736314, 1104471, 2208942, 3313413, 6626826, 9940239, 19880478]

約数ペア:

[(1, 19880478), (2, 9940239), (3, 6626826), (6, 3313413), (9, 2208942), (18, 1104471), (27, 736314), (54, 368157), (81, 245438), (162, 122719)]