20612823

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17126697

約数列:

[1, 3, 7, 11, 17, 21, 29, 33, 51, 77, 87, 119, 181, 187, 203, 231, 319, 357, 493, 543, 561, 609, 957, 1267, 1309, 1479, 1991, 2233, 3077, 3451, 3801, 3927, 5249, 5423, 5973, 6699, 9231, 10353, 13937, 15747, 16269, 21539, 33847, 36743, 37961, 41811, 57739, 64617, 89233, 101541, 110229, 113883, 173217, 236929, 267699, 404173, 624631, 710787, 981563, 1212519, 1873893, 2944689, 6870941, 20612823]

約数ペア:

[(1, 20612823), (3, 6870941), (7, 2944689), (11, 1873893), (17, 1212519), (21, 981563), (29, 710787), (33, 624631), (51, 404173), (77, 267699), (87, 236929), (119, 173217), (181, 113883), (187, 110229), (203, 101541), (231, 89233), (319, 64617), (357, 57739), (493, 41811), (543, 37961), (561, 36743), (609, 33847), (957, 21539), (1267, 16269), (1309, 15747), (1479, 13937), (1991, 10353), (2233, 9231), (3077, 6699), (3451, 5973), (3801, 5423), (3927, 5249)]