20008215

素因数分解:

$3^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:533

約数の個数: 40

約数和(自身を含む): 36241920

約数和(自身を除く): 16233705

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 127, 135, 381, 389, 405, 635, 1143, 1167, 1905, 1945, 3429, 3501, 5715, 5835, 10287, 10503, 17145, 17505, 31509, 49403, 51435, 52515, 148209, 157545, 247015, 444627, 741045, 1333881, 2223135, 4001643, 6669405, 20008215]

約数ペア:

[(1, 20008215), (3, 6669405), (5, 4001643), (9, 2223135), (15, 1333881), (27, 741045), (45, 444627), (81, 247015), (127, 157545), (135, 148209), (381, 52515), (389, 51435), (405, 49403), (635, 31509), (1143, 17505), (1167, 17145), (1905, 10503), (1945, 10287), (3429, 5835), (3501, 5715)]