21215124

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2903}}^1$

素因数の和:2949

約数の個数: 72

約数和(自身を含む): 63423360

約数和(自身を除く): 42208236

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 58, 63, 84, 87, 116, 126, 174, 203, 252, 261, 348, 406, 522, 609, 812, 1044, 1218, 1827, 2436, 2903, 3654, 5806, 7308, 8709, 11612, 17418, 20321, 26127, 34836, 40642, 52254, 60963, 81284, 84187, 104508, 121926, 168374, 182889, 243852, 252561, 336748, 365778, 505122, 589309, 731556, 757683, 1010244, 1178618, 1515366, 1767927, 2357236, 3030732, 3535854, 5303781, 7071708, 10607562, 21215124]

約数ペア:

[(1, 21215124), (2, 10607562), (3, 7071708), (4, 5303781), (6, 3535854), (7, 3030732), (9, 2357236), (12, 1767927), (14, 1515366), (18, 1178618), (21, 1010244), (28, 757683), (29, 731556), (36, 589309), (42, 505122), (58, 365778), (63, 336748), (84, 252561), (87, 243852), (116, 182889), (126, 168374), (174, 121926), (203, 104508), (252, 84187), (261, 81284), (348, 60963), (406, 52254), (522, 40642), (609, 34836), (812, 26127), (1044, 20321), (1218, 17418), (1827, 11612), (2436, 8709), (2903, 7308), (3654, 5806)]