20321847

素因数分解:

$3^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{919}}^1$

素因数の和:954

約数の個数: 48

約数和(自身を含む): 37506560

約数和(自身を除く): 17184713

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 243, 273, 351, 567, 819, 919, 1053, 1701, 2457, 2757, 3159, 6433, 7371, 8271, 11947, 19299, 22113, 24813, 35841, 57897, 74439, 83629, 107523, 173691, 223317, 250887, 322569, 521073, 752661, 967707, 1563219, 2257983, 2903121, 6773949, 20321847]

約数ペア:

[(1, 20321847), (3, 6773949), (7, 2903121), (9, 2257983), (13, 1563219), (21, 967707), (27, 752661), (39, 521073), (63, 322569), (81, 250887), (91, 223317), (117, 173691), (189, 107523), (243, 83629), (273, 74439), (351, 57897), (567, 35841), (819, 24813), (919, 22113), (1053, 19299), (1701, 11947), (2457, 8271), (2757, 7371), (3159, 6433)]