21212037

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:228

約数の個数: 80

約数和(自身を含む): 41817600

約数和(自身を除く): 20605563

約数列:

[1, 3, 7, 9, 11, 19, 21, 27, 33, 57, 63, 77, 81, 99, 133, 171, 179, 189, 209, 231, 297, 399, 513, 537, 567, 627, 693, 891, 1197, 1253, 1463, 1539, 1611, 1881, 1969, 2079, 3401, 3591, 3759, 4389, 4833, 5643, 5907, 6237, 10203, 10773, 11277, 13167, 13783, 14499, 16929, 17721, 23807, 30609, 33831, 37411, 39501, 41349, 53163, 71421, 91827, 101493, 112233, 118503, 124047, 159489, 214263, 261877, 275481, 336699, 372141, 642789, 785631, 1010097, 1116423, 1928367, 2356893, 3030291, 7070679, 21212037]

約数ペア:

[(1, 21212037), (3, 7070679), (7, 3030291), (9, 2356893), (11, 1928367), (19, 1116423), (21, 1010097), (27, 785631), (33, 642789), (57, 372141), (63, 336699), (77, 275481), (81, 261877), (99, 214263), (133, 159489), (171, 124047), (179, 118503), (189, 112233), (209, 101493), (231, 91827), (297, 71421), (399, 53163), (513, 41349), (537, 39501), (567, 37411), (627, 33831), (693, 30609), (891, 23807), (1197, 17721), (1253, 16929), (1463, 14499), (1539, 13783), (1611, 13167), (1881, 11277), (1969, 10773), (2079, 10203), (3401, 6237), (3591, 5907), (3759, 5643), (4389, 4833)]