20702913

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16621887

約数列:

[1, 3, 7, 11, 19, 21, 33, 53, 57, 77, 89, 133, 159, 209, 231, 267, 371, 399, 583, 623, 627, 979, 1007, 1113, 1463, 1691, 1749, 1869, 2937, 3021, 4081, 4389, 4717, 5073, 6853, 7049, 11077, 11837, 12243, 14151, 18601, 20559, 21147, 33019, 33231, 35511, 51887, 55803, 77539, 89623, 99057, 130207, 155661, 232617, 268869, 363209, 390621, 627361, 985853, 1089627, 1882083, 2957559, 6900971, 20702913]

約数ペア:

[(1, 20702913), (3, 6900971), (7, 2957559), (11, 1882083), (19, 1089627), (21, 985853), (33, 627361), (53, 390621), (57, 363209), (77, 268869), (89, 232617), (133, 155661), (159, 130207), (209, 99057), (231, 89623), (267, 77539), (371, 55803), (399, 51887), (583, 35511), (623, 33231), (627, 33019), (979, 21147), (1007, 20559), (1113, 18601), (1463, 14151), (1691, 12243), (1749, 11837), (1869, 11077), (2937, 7049), (3021, 6853), (4081, 5073), (4389, 4717)]