21718305

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{68947}}^1$

素因数の和:68965

約数の個数: 24

約数和(自身を含む): 43023552

約数和(自身を除く): 21305247

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 68947, 206841, 344735, 482629, 620523, 1034205, 1447887, 2413145, 3102615, 4343661, 7239435, 21718305]

約数ペア:

[(1, 21718305), (3, 7239435), (5, 4343661), (7, 3102615), (9, 2413145), (15, 1447887), (21, 1034205), (35, 620523), (45, 482629), (63, 344735), (105, 206841), (315, 68947)]