21028154

素因数分解:

$2^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{937}}^1$

素因数の和:1182

約数の個数: 24

約数和(自身を含む): 36891540

約数和(自身を除く): 15863386

約数列:

[1, 2, 7, 14, 49, 98, 229, 458, 937, 1603, 1874, 3206, 6559, 11221, 13118, 22442, 45913, 91826, 214573, 429146, 1502011, 3004022, 10514077, 21028154]

約数ペア:

[(1, 21028154), (2, 10514077), (7, 3004022), (14, 1502011), (49, 429146), (98, 214573), (229, 91826), (458, 45913), (937, 22442), (1603, 13118), (1874, 11221), (3206, 6559)]