18787216

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:188

約数の個数: 80

約数和(自身を含む): 43997184

約数和(自身を除く): 25209968

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 47, 56, 83, 86, 94, 112, 166, 172, 188, 301, 329, 332, 344, 376, 581, 602, 658, 664, 688, 752, 1162, 1204, 1316, 1328, 2021, 2324, 2408, 2632, 3569, 3901, 4042, 4648, 4816, 5264, 7138, 7802, 8084, 9296, 14147, 14276, 15604, 16168, 24983, 27307, 28294, 28552, 31208, 32336, 49966, 54614, 56588, 57104, 62416, 99932, 109228, 113176, 167743, 199864, 218456, 226352, 335486, 399728, 436912, 670972, 1174201, 1341944, 2348402, 2683888, 4696804, 9393608, 18787216]

約数ペア:

[(1, 18787216), (2, 9393608), (4, 4696804), (7, 2683888), (8, 2348402), (14, 1341944), (16, 1174201), (28, 670972), (43, 436912), (47, 399728), (56, 335486), (83, 226352), (86, 218456), (94, 199864), (112, 167743), (166, 113176), (172, 109228), (188, 99932), (301, 62416), (329, 57104), (332, 56588), (344, 54614), (376, 49966), (581, 32336), (602, 31208), (658, 28552), (664, 28294), (688, 27307), (752, 24983), (1162, 16168), (1204, 15604), (1316, 14276), (1328, 14147), (2021, 9296), (2324, 8084), (2408, 7802), (2632, 7138), (3569, 5264), (3901, 4816), (4042, 4648)]