20486997

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5209}}^1$

素因数の和:5257

約数の個数: 24

約数和(自身を含む): 32510400

約数和(自身を除く): 12023403

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 5209, 15627, 46881, 98971, 119807, 296913, 359421, 890739, 1078263, 2276333, 6828999, 20486997]

約数ペア:

[(1, 20486997), (3, 6828999), (9, 2276333), (19, 1078263), (23, 890739), (57, 359421), (69, 296913), (171, 119807), (207, 98971), (437, 46881), (1311, 15627), (3933, 5209)]