21523887

素因数分解:

$3^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:83

約数の個数: 120

約数和(自身を含む): 44692560

約数和(自身を除く): 23168673

約数列:

[1, 3, 7, 9, 11, 17, 21, 27, 29, 33, 49, 51, 63, 77, 81, 87, 99, 119, 147, 153, 187, 189, 203, 231, 261, 297, 319, 357, 441, 459, 493, 539, 561, 567, 609, 693, 783, 833, 891, 957, 1071, 1309, 1323, 1377, 1421, 1479, 1617, 1683, 1827, 2079, 2233, 2349, 2499, 2871, 3213, 3451, 3927, 3969, 4263, 4437, 4851, 5049, 5423, 5481, 6237, 6699, 7497, 8613, 9163, 9639, 10353, 11781, 12789, 13311, 14553, 15147, 15631, 16269, 16443, 20097, 22491, 24157, 25839, 27489, 31059, 35343, 37961, 38367, 39933, 43659, 46893, 48807, 60291, 67473, 72471, 82467, 93177, 106029, 113883, 115101, 140679, 146421, 180873, 217413, 247401, 265727, 279531, 341649, 422037, 439263, 652239, 742203, 797181, 1024947, 1266111, 1956717, 2391543, 3074841, 7174629, 21523887]

約数ペア:

[(1, 21523887), (3, 7174629), (7, 3074841), (9, 2391543), (11, 1956717), (17, 1266111), (21, 1024947), (27, 797181), (29, 742203), (33, 652239), (49, 439263), (51, 422037), (63, 341649), (77, 279531), (81, 265727), (87, 247401), (99, 217413), (119, 180873), (147, 146421), (153, 140679), (187, 115101), (189, 113883), (203, 106029), (231, 93177), (261, 82467), (297, 72471), (319, 67473), (357, 60291), (441, 48807), (459, 46893), (493, 43659), (539, 39933), (561, 38367), (567, 37961), (609, 35343), (693, 31059), (783, 27489), (833, 25839), (891, 24157), (957, 22491), (1071, 20097), (1309, 16443), (1323, 16269), (1377, 15631), (1421, 15147), (1479, 14553), (1617, 13311), (1683, 12789), (1827, 11781), (2079, 10353), (2233, 9639), (2349, 9163), (2499, 8613), (2871, 7497), (3213, 6699), (3451, 6237), (3927, 5481), (3969, 5423), (4263, 5049), (4437, 4851)]