20644911

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^2\times {\mathrm{73}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 35070672

約数和(自身を除く): 14425761

約数列:

[1, 3, 7, 9, 21, 63, 67, 73, 201, 219, 469, 511, 603, 657, 1407, 1533, 4221, 4489, 4599, 4891, 13467, 14673, 31423, 34237, 40401, 44019, 94269, 102711, 282807, 308133, 327697, 983091, 2293879, 2949273, 6881637, 20644911]

約数ペア:

[(1, 20644911), (3, 6881637), (7, 2949273), (9, 2293879), (21, 983091), (63, 327697), (67, 308133), (73, 282807), (201, 102711), (219, 94269), (469, 44019), (511, 40401), (603, 34237), (657, 31423), (1407, 14673), (1533, 13467), (4221, 4891), (4489, 4599)]