20512863

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 36391680

約数和(自身を除く): 15878817

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 107, 119, 153, 179, 321, 357, 537, 749, 963, 1071, 1253, 1611, 1819, 2247, 3043, 3759, 5457, 6741, 9129, 11277, 12733, 16371, 19153, 21301, 27387, 38199, 57459, 63903, 114597, 134071, 172377, 191709, 325601, 402213, 976803, 1206639, 2279207, 2930409, 6837621, 20512863]

約数ペア:

[(1, 20512863), (3, 6837621), (7, 2930409), (9, 2279207), (17, 1206639), (21, 976803), (51, 402213), (63, 325601), (107, 191709), (119, 172377), (153, 134071), (179, 114597), (321, 63903), (357, 57459), (537, 38199), (749, 27387), (963, 21301), (1071, 19153), (1253, 16371), (1611, 12733), (1819, 11277), (2247, 9129), (3043, 6741), (3759, 5457)]