19884807

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1621}}^1$

素因数の和:1703

約数の個数: 24

約数和(自身を含む): 30363840

約数和(自身を除く): 10479033

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 1363, 1621, 4089, 4863, 12267, 14589, 47009, 76187, 141027, 228561, 423081, 685683, 2209423, 6628269, 19884807]

約数ペア:

[(1, 19884807), (3, 6628269), (9, 2209423), (29, 685683), (47, 423081), (87, 228561), (141, 141027), (261, 76187), (423, 47009), (1363, 14589), (1621, 12267), (4089, 4863)]