20949255

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4271}}^1$

素因数の和:4391

約数の個数: 24

約数和(自身を含む): 36653760

約数和(自身を除く): 15704505

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4271, 4905, 12813, 21355, 38439, 64065, 192195, 465539, 1396617, 2327695, 4189851, 6983085, 20949255]

約数ペア:

[(1, 20949255), (3, 6983085), (5, 4189851), (9, 2327695), (15, 1396617), (45, 465539), (109, 192195), (327, 64065), (545, 38439), (981, 21355), (1635, 12813), (4271, 4905)]