21151788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:519

約数の個数: 96

約数和(自身を含む): 61555200

約数和(自身を除く): 40403412

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 29, 38, 42, 57, 58, 76, 84, 87, 114, 116, 133, 174, 203, 228, 266, 348, 399, 406, 457, 532, 551, 609, 798, 812, 914, 1102, 1218, 1371, 1596, 1653, 1828, 2204, 2436, 2742, 3199, 3306, 3857, 5484, 6398, 6612, 7714, 8683, 9597, 11571, 12796, 13253, 15428, 17366, 19194, 23142, 26049, 26506, 34732, 38388, 39759, 46284, 52098, 53012, 60781, 79518, 92771, 104196, 121562, 159036, 182343, 185542, 243124, 251807, 278313, 364686, 371084, 503614, 556626, 729372, 755421, 1007228, 1113252, 1510842, 1762649, 3021684, 3525298, 5287947, 7050596, 10575894, 21151788]

約数ペア:

[(1, 21151788), (2, 10575894), (3, 7050596), (4, 5287947), (6, 3525298), (7, 3021684), (12, 1762649), (14, 1510842), (19, 1113252), (21, 1007228), (28, 755421), (29, 729372), (38, 556626), (42, 503614), (57, 371084), (58, 364686), (76, 278313), (84, 251807), (87, 243124), (114, 185542), (116, 182343), (133, 159036), (174, 121562), (203, 104196), (228, 92771), (266, 79518), (348, 60781), (399, 53012), (406, 52098), (457, 46284), (532, 39759), (551, 38388), (609, 34732), (798, 26506), (812, 26049), (914, 23142), (1102, 19194), (1218, 17366), (1371, 15428), (1596, 13253), (1653, 12796), (1828, 11571), (2204, 9597), (2436, 8683), (2742, 7714), (3199, 6612), (3306, 6398), (3857, 5484)]