645974896

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{1187}}^1$

素因数の和:1358

約数の個数: 80

約数和(自身を含む): 1477833984

約数和(自身を除く): 831859088

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 113, 172, 226, 301, 344, 452, 602, 688, 791, 904, 1187, 1204, 1582, 1808, 2374, 2408, 3164, 4748, 4816, 4859, 6328, 8309, 9496, 9718, 12656, 16618, 18992, 19436, 33236, 34013, 38872, 51041, 66472, 68026, 77744, 102082, 132944, 134131, 136052, 204164, 268262, 272104, 357287, 408328, 536524, 544208, 714574, 816656, 938917, 1073048, 1429148, 1877834, 2146096, 2858296, 3755668, 5716592, 5767633, 7511336, 11535266, 15022672, 23070532, 40373431, 46141064, 80746862, 92282128, 161493724, 322987448, 645974896]

約数ペア:

[(1, 645974896), (2, 322987448), (4, 161493724), (7, 92282128), (8, 80746862), (14, 46141064), (16, 40373431), (28, 23070532), (43, 15022672), (56, 11535266), (86, 7511336), (112, 5767633), (113, 5716592), (172, 3755668), (226, 2858296), (301, 2146096), (344, 1877834), (452, 1429148), (602, 1073048), (688, 938917), (791, 816656), (904, 714574), (1187, 544208), (1204, 536524), (1582, 408328), (1808, 357287), (2374, 272104), (2408, 268262), (3164, 204164), (4748, 136052), (4816, 134131), (4859, 132944), (6328, 102082), (8309, 77744), (9496, 68026), (9718, 66472), (12656, 51041), (16618, 38872), (18992, 34013), (19436, 33236)]