20616057

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17123463

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 71, 77, 99, 213, 231, 419, 497, 639, 693, 781, 1257, 1491, 2343, 2933, 3771, 4473, 4609, 5467, 7029, 8799, 13827, 16401, 26397, 29749, 32263, 41481, 49203, 89247, 96789, 208243, 267741, 290367, 327239, 624729, 981717, 1874187, 2290673, 2945151, 6872019, 20616057]

約数ペア:

[(1, 20616057), (3, 6872019), (7, 2945151), (9, 2290673), (11, 1874187), (21, 981717), (33, 624729), (63, 327239), (71, 290367), (77, 267741), (99, 208243), (213, 96789), (231, 89247), (419, 49203), (497, 41481), (639, 32263), (693, 29749), (781, 26397), (1257, 16401), (1491, 13827), (2343, 8799), (2933, 7029), (3771, 5467), (4473, 4609)]