18909856

素因数分解:

$2^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 96

約数和(自身を含む): 45722880

約数和(自身を除く): 26813024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 41, 56, 58, 71, 82, 112, 116, 142, 164, 203, 224, 232, 284, 287, 328, 406, 464, 497, 568, 574, 656, 812, 928, 994, 1136, 1148, 1189, 1312, 1624, 1988, 2059, 2272, 2296, 2378, 2911, 3248, 3976, 4118, 4592, 4756, 5822, 6496, 7952, 8236, 8323, 9184, 9512, 11644, 14413, 15904, 16472, 16646, 19024, 20377, 23288, 28826, 32944, 33292, 38048, 40754, 46576, 57652, 65888, 66584, 81508, 84419, 93152, 115304, 133168, 163016, 168838, 230608, 266336, 326032, 337676, 461216, 590933, 652064, 675352, 1181866, 1350704, 2363732, 2701408, 4727464, 9454928, 18909856]

約数ペア:

[(1, 18909856), (2, 9454928), (4, 4727464), (7, 2701408), (8, 2363732), (14, 1350704), (16, 1181866), (28, 675352), (29, 652064), (32, 590933), (41, 461216), (56, 337676), (58, 326032), (71, 266336), (82, 230608), (112, 168838), (116, 163016), (142, 133168), (164, 115304), (203, 93152), (224, 84419), (232, 81508), (284, 66584), (287, 65888), (328, 57652), (406, 46576), (464, 40754), (497, 38048), (568, 33292), (574, 32944), (656, 28826), (812, 23288), (928, 20377), (994, 19024), (1136, 16646), (1148, 16472), (1189, 15904), (1312, 14413), (1624, 11644), (1988, 9512), (2059, 9184), (2272, 8323), (2296, 8236), (2378, 7952), (2911, 6496), (3248, 5822), (3976, 4756), (4118, 4592)]