20165985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{64019}}^1$

素因数の和:64037

約数の個数: 24

約数和(自身を含む): 39948480

約数和(自身を除く): 19782495

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 64019, 192057, 320095, 448133, 576171, 960285, 1344399, 2240665, 2880855, 4033197, 6721995, 20165985]

約数ペア:

[(1, 20165985), (3, 6721995), (5, 4033197), (7, 2880855), (9, 2240665), (15, 1344399), (21, 960285), (35, 576171), (45, 448133), (63, 320095), (105, 192057), (315, 64019)]