21212688

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:365

約数の個数: 120

約数和(自身を含む): 66156480

約数和(自身を除く): 44943792

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 29, 42, 48, 49, 56, 58, 84, 87, 98, 112, 116, 147, 168, 174, 196, 203, 232, 294, 311, 336, 348, 392, 406, 464, 588, 609, 622, 696, 784, 812, 933, 1176, 1218, 1244, 1392, 1421, 1624, 1866, 2177, 2352, 2436, 2488, 2842, 3248, 3732, 4263, 4354, 4872, 4976, 5684, 6531, 7464, 8526, 8708, 9019, 9744, 11368, 13062, 14928, 15239, 17052, 17416, 18038, 22736, 26124, 27057, 30478, 34104, 34832, 36076, 45717, 52248, 54114, 60956, 63133, 68208, 72152, 91434, 104496, 108228, 121912, 126266, 144304, 182868, 189399, 216456, 243824, 252532, 365736, 378798, 432912, 441931, 505064, 731472, 757596, 883862, 1010128, 1325793, 1515192, 1767724, 2651586, 3030384, 3535448, 5303172, 7070896, 10606344, 21212688]

約数ペア:

[(1, 21212688), (2, 10606344), (3, 7070896), (4, 5303172), (6, 3535448), (7, 3030384), (8, 2651586), (12, 1767724), (14, 1515192), (16, 1325793), (21, 1010128), (24, 883862), (28, 757596), (29, 731472), (42, 505064), (48, 441931), (49, 432912), (56, 378798), (58, 365736), (84, 252532), (87, 243824), (98, 216456), (112, 189399), (116, 182868), (147, 144304), (168, 126266), (174, 121912), (196, 108228), (203, 104496), (232, 91434), (294, 72152), (311, 68208), (336, 63133), (348, 60956), (392, 54114), (406, 52248), (464, 45717), (588, 36076), (609, 34832), (622, 34104), (696, 30478), (784, 27057), (812, 26124), (933, 22736), (1176, 18038), (1218, 17416), (1244, 17052), (1392, 15239), (1421, 14928), (1624, 13062), (1866, 11368), (2177, 9744), (2352, 9019), (2436, 8708), (2488, 8526), (2842, 7464), (3248, 6531), (3732, 5684), (4263, 4976), (4354, 4872)]