21338788

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{4651}}^1$

素因数の和:4723

約数の個数: 24

約数和(自身を含む): 39597824

約数和(自身を除く): 18259036

約数列:

[1, 2, 4, 31, 37, 62, 74, 124, 148, 1147, 2294, 4588, 4651, 9302, 18604, 144181, 172087, 288362, 344174, 576724, 688348, 5334697, 10669394, 21338788]

約数ペア:

[(1, 21338788), (2, 10669394), (4, 5334697), (31, 688348), (37, 576724), (62, 344174), (74, 288362), (124, 172087), (148, 144181), (1147, 18604), (2294, 9302), (4588, 4651)]