19801954

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{1531}}^1$

素因数の和:1785

約数の個数: 16

約数和(自身を含む): 30885120

約数和(自身を除く): 11083166

約数列:

[1, 2, 29, 58, 223, 446, 1531, 3062, 6467, 12934, 44399, 88798, 341413, 682826, 9900977, 19801954]

約数ペア:

[(1, 19801954), (2, 9900977), (29, 682826), (58, 341413), (223, 88798), (446, 44399), (1531, 12934), (3062, 6467)]