19503666

素因数分解:

$2^1\times 3^7\times 7^3\times {\mathrm{13}}^1$

素因数の和:57

約数の個数: 128

約数和(自身を含む): 55104000

約数和(自身を除く): 35600334

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 49, 54, 63, 78, 81, 91, 98, 117, 126, 147, 162, 182, 189, 234, 243, 273, 294, 343, 351, 378, 441, 486, 546, 567, 637, 686, 702, 729, 819, 882, 1029, 1053, 1134, 1274, 1323, 1458, 1638, 1701, 1911, 2058, 2106, 2187, 2457, 2646, 3087, 3159, 3402, 3822, 3969, 4374, 4459, 4914, 5103, 5733, 6174, 6318, 7371, 7938, 8918, 9261, 9477, 10206, 11466, 11907, 13377, 14742, 15309, 17199, 18522, 18954, 22113, 23814, 26754, 27783, 28431, 30618, 34398, 35721, 40131, 44226, 51597, 55566, 56862, 66339, 71442, 80262, 83349, 103194, 107163, 120393, 132678, 154791, 166698, 199017, 214326, 240786, 250047, 309582, 361179, 398034, 464373, 500094, 722358, 750141, 928746, 1083537, 1393119, 1500282, 2167074, 2786238, 3250611, 6501222, 9751833, 19503666]

約数ペア:

[(1, 19503666), (2, 9751833), (3, 6501222), (6, 3250611), (7, 2786238), (9, 2167074), (13, 1500282), (14, 1393119), (18, 1083537), (21, 928746), (26, 750141), (27, 722358), (39, 500094), (42, 464373), (49, 398034), (54, 361179), (63, 309582), (78, 250047), (81, 240786), (91, 214326), (98, 199017), (117, 166698), (126, 154791), (147, 132678), (162, 120393), (182, 107163), (189, 103194), (234, 83349), (243, 80262), (273, 71442), (294, 66339), (343, 56862), (351, 55566), (378, 51597), (441, 44226), (486, 40131), (546, 35721), (567, 34398), (637, 30618), (686, 28431), (702, 27783), (729, 26754), (819, 23814), (882, 22113), (1029, 18954), (1053, 18522), (1134, 17199), (1274, 15309), (1323, 14742), (1458, 13377), (1638, 11907), (1701, 11466), (1911, 10206), (2058, 9477), (2106, 9261), (2187, 8918), (2457, 7938), (2646, 7371), (3087, 6318), (3159, 6174), (3402, 5733), (3822, 5103), (3969, 4914), (4374, 4459)]