21785072

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:357

約数の個数: 40

約数和(自身を含む): 43425792

約数和(自身を除く): 21640720

約数列:

[1, 2, 4, 8, 16, 71, 127, 142, 151, 254, 284, 302, 508, 568, 604, 1016, 1136, 1208, 2032, 2416, 9017, 10721, 18034, 19177, 21442, 36068, 38354, 42884, 72136, 76708, 85768, 144272, 153416, 171536, 306832, 1361567, 2723134, 5446268, 10892536, 21785072]

約数ペア:

[(1, 21785072), (2, 10892536), (4, 5446268), (8, 2723134), (16, 1361567), (71, 306832), (127, 171536), (142, 153416), (151, 144272), (254, 85768), (284, 76708), (302, 72136), (508, 42884), (568, 38354), (604, 36068), (1016, 21442), (1136, 19177), (1208, 18034), (2032, 10721), (2416, 9017)]