20570019

素因数分解:

$3^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 29432832

約数和(自身を除く): 8862813

約数列:

[1, 3, 29, 31, 87, 93, 263, 789, 841, 899, 2523, 2697, 7627, 8153, 22881, 24459, 26071, 78213, 221183, 236437, 663549, 709311, 6856673, 20570019]

約数ペア:

[(1, 20570019), (3, 6856673), (29, 709311), (31, 663549), (87, 236437), (93, 221183), (263, 78213), (789, 26071), (841, 24459), (899, 22881), (2523, 8153), (2697, 7627)]