20369181

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{15901}}^1$

素因数の和:15972

約数の個数: 16

約数和(自身を含む): 31549568

約数和(自身を除く): 11180387

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 15901, 47703, 111307, 333921, 969961, 2909883, 6789727, 20369181]

約数ペア:

[(1, 20369181), (3, 6789727), (7, 2909883), (21, 969961), (61, 333921), (183, 111307), (427, 47703), (1281, 15901)]