20996935904

素因数分解:

$2^5\times 7^2\times {\mathrm{61}}^1\times {\mathrm{219523}}^1$

素因数の和:219608

約数の個数: 72

約数和(自身を含む): 48875262408

約数和(自身を除く): 27878326504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 61, 98, 112, 122, 196, 224, 244, 392, 427, 488, 784, 854, 976, 1568, 1708, 1952, 2989, 3416, 5978, 6832, 11956, 13664, 23912, 47824, 95648, 219523, 439046, 878092, 1536661, 1756184, 3073322, 3512368, 6146644, 7024736, 10756627, 12293288, 13390903, 21513254, 24586576, 26781806, 43026508, 49173152, 53563612, 86053016, 93736321, 107127224, 172106032, 187472642, 214254448, 344212064, 374945284, 428508896, 656154247, 749890568, 1312308494, 1499781136, 2624616988, 2999562272, 5249233976, 10498467952, 20996935904]

約数ペア:

[(1, 20996935904), (2, 10498467952), (4, 5249233976), (7, 2999562272), (8, 2624616988), (14, 1499781136), (16, 1312308494), (28, 749890568), (32, 656154247), (49, 428508896), (56, 374945284), (61, 344212064), (98, 214254448), (112, 187472642), (122, 172106032), (196, 107127224), (224, 93736321), (244, 86053016), (392, 53563612), (427, 49173152), (488, 43026508), (784, 26781806), (854, 24586576), (976, 21513254), (1568, 13390903), (1708, 12293288), (1952, 10756627), (2989, 7024736), (3416, 6146644), (5978, 3512368), (6832, 3073322), (11956, 1756184), (13664, 1536661), (23912, 878092), (47824, 439046), (95648, 219523)]