19957707

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{929}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 37140480

約数和(自身を除く): 17182773

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 63, 77, 93, 99, 217, 231, 279, 341, 651, 693, 929, 1023, 1953, 2387, 2787, 3069, 6503, 7161, 8361, 10219, 19509, 21483, 28799, 30657, 58527, 71533, 86397, 91971, 201593, 214599, 259191, 316789, 604779, 643797, 950367, 1814337, 2217523, 2851101, 6652569, 19957707]

約数ペア:

[(1, 19957707), (3, 6652569), (7, 2851101), (9, 2217523), (11, 1814337), (21, 950367), (31, 643797), (33, 604779), (63, 316789), (77, 259191), (93, 214599), (99, 201593), (217, 91971), (231, 86397), (279, 71533), (341, 58527), (651, 30657), (693, 28799), (929, 21483), (1023, 19509), (1953, 10219), (2387, 8361), (2787, 7161), (3069, 6503)]