201870585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{640859}}^1$

素因数の和:640877

約数の個数: 24

約数和(自身を含む): 399896640

約数和(自身を除く): 198026055

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 640859, 1922577, 3204295, 4486013, 5767731, 9612885, 13458039, 22430065, 28838655, 40374117, 67290195, 201870585]

約数ペア:

[(1, 201870585), (3, 67290195), (5, 40374117), (7, 28838655), (9, 22430065), (15, 13458039), (21, 9612885), (35, 5767731), (45, 4486013), (63, 3204295), (105, 1922577), (315, 640859)]