20977155

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{7901}}^1$

素因数の和:7971

約数の個数: 24

約数和(自身を含む): 36981360

約数和(自身を除く): 16004205

約数列:

[1, 3, 5, 9, 15, 45, 59, 177, 295, 531, 885, 2655, 7901, 23703, 39505, 71109, 118515, 355545, 466159, 1398477, 2330795, 4195431, 6992385, 20977155]

約数ペア:

[(1, 20977155), (3, 6992385), (5, 4195431), (9, 2330795), (15, 1398477), (45, 466159), (59, 355545), (177, 118515), (295, 71109), (531, 39505), (885, 23703), (2655, 7901)]