20338269

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 32169984

約数和(自身を除く): 11831715

約数列:

[1, 3, 7, 21, 43, 101, 129, 223, 301, 303, 669, 707, 903, 1561, 2121, 4343, 4683, 9589, 13029, 22523, 28767, 30401, 67123, 67569, 91203, 157661, 201369, 472983, 968489, 2905467, 6779423, 20338269]

約数ペア:

[(1, 20338269), (3, 6779423), (7, 2905467), (21, 968489), (43, 472983), (101, 201369), (129, 157661), (223, 91203), (301, 67569), (303, 67123), (669, 30401), (707, 28767), (903, 22523), (1561, 13029), (2121, 9589), (4343, 4683)]