19810161

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1549}}^1$

素因数の和:1598

約数の個数: 36

約数和(自身を含む): 34456500

約数和(自身を除く): 14646339

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1549, 1827, 4263, 4647, 10843, 12789, 13941, 32529, 44921, 75901, 97587, 134763, 227703, 314447, 404289, 683109, 943341, 2201129, 2830023, 6603387, 19810161]

約数ペア:

[(1, 19810161), (3, 6603387), (7, 2830023), (9, 2201129), (21, 943341), (29, 683109), (49, 404289), (63, 314447), (87, 227703), (147, 134763), (203, 97587), (261, 75901), (441, 44921), (609, 32529), (1421, 13941), (1549, 12789), (1827, 10843), (4263, 4647)]