20197755

素因数分解:

$3^4\times 5^1\times {\mathrm{49871}}^1$

素因数の和:49888

約数の個数: 20

約数和(自身を含む): 36207072

約数和(自身を除く): 16009317

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49871, 149613, 249355, 448839, 748065, 1346517, 2244195, 4039551, 6732585, 20197755]

約数ペア:

[(1, 20197755), (3, 6732585), (5, 4039551), (9, 2244195), (15, 1346517), (27, 748065), (45, 448839), (81, 249355), (135, 149613), (405, 49871)]