21285172

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{2633}}^1$

素因数の和:2727

約数の個数: 24

約数和(自身を含む): 38941056

約数和(自身を除く): 17655884

約数列:

[1, 2, 4, 43, 47, 86, 94, 172, 188, 2021, 2633, 4042, 5266, 8084, 10532, 113219, 123751, 226438, 247502, 452876, 495004, 5321293, 10642586, 21285172]

約数ペア:

[(1, 21285172), (2, 10642586), (4, 5321293), (43, 495004), (47, 452876), (86, 247502), (94, 226438), (172, 123751), (188, 113219), (2021, 10532), (2633, 8084), (4042, 5266)]