19728027

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1973}}^1$

素因数の和:2091

約数の個数: 24

約数和(自身を含む): 31410288

約数和(自身を除く): 11682261

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 1973, 3333, 5919, 9999, 17757, 21703, 65109, 195327, 199273, 597819, 1793457, 2192003, 6576009, 19728027]

約数ペア:

[(1, 19728027), (3, 6576009), (9, 2192003), (11, 1793457), (33, 597819), (99, 199273), (101, 195327), (303, 65109), (909, 21703), (1111, 17757), (1973, 9999), (3333, 5919)]