19887405

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{13127}}^1$

素因数の和:13236

約数の個数: 16

約数和(自身を含む): 32137344

約数和(自身を除く): 12249939

約数列:

[1, 3, 5, 15, 101, 303, 505, 1515, 13127, 39381, 65635, 196905, 1325827, 3977481, 6629135, 19887405]

約数ペア:

[(1, 19887405), (3, 6629135), (5, 3977481), (15, 1325827), (101, 196905), (303, 65635), (505, 39381), (1515, 13127)]