20993448

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 64512000

約数和(自身を除く): 43518552

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 29, 31, 42, 56, 58, 62, 84, 87, 93, 116, 124, 139, 168, 174, 186, 203, 217, 232, 248, 278, 348, 372, 406, 417, 434, 556, 609, 651, 696, 744, 812, 834, 868, 899, 973, 1112, 1218, 1302, 1624, 1668, 1736, 1798, 1946, 2436, 2604, 2697, 2919, 3336, 3596, 3892, 4031, 4309, 4872, 5208, 5394, 5838, 6293, 7192, 7784, 8062, 8618, 10788, 11676, 12093, 12586, 12927, 16124, 17236, 18879, 21576, 23352, 24186, 25172, 25854, 28217, 30163, 32248, 34472, 37758, 48372, 50344, 51708, 56434, 60326, 75516, 84651, 90489, 96744, 103416, 112868, 120652, 124961, 151032, 169302, 180978, 225736, 241304, 249922, 338604, 361956, 374883, 499844, 677208, 723912, 749766, 874727, 999688, 1499532, 1749454, 2624181, 2999064, 3498908, 5248362, 6997816, 10496724, 20993448]

約数ペア:

[(1, 20993448), (2, 10496724), (3, 6997816), (4, 5248362), (6, 3498908), (7, 2999064), (8, 2624181), (12, 1749454), (14, 1499532), (21, 999688), (24, 874727), (28, 749766), (29, 723912), (31, 677208), (42, 499844), (56, 374883), (58, 361956), (62, 338604), (84, 249922), (87, 241304), (93, 225736), (116, 180978), (124, 169302), (139, 151032), (168, 124961), (174, 120652), (186, 112868), (203, 103416), (217, 96744), (232, 90489), (248, 84651), (278, 75516), (348, 60326), (372, 56434), (406, 51708), (417, 50344), (434, 48372), (556, 37758), (609, 34472), (651, 32248), (696, 30163), (744, 28217), (812, 25854), (834, 25172), (868, 24186), (899, 23352), (973, 21576), (1112, 18879), (1218, 17236), (1302, 16124), (1624, 12927), (1668, 12586), (1736, 12093), (1798, 11676), (1946, 10788), (2436, 8618), (2604, 8062), (2697, 7784), (2919, 7192), (3336, 6293), (3596, 5838), (3892, 5394), (4031, 5208), (4309, 4872)]