18657872

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{577}}^1$

素因数の和:675

約数の個数: 40

約数和(自身を含む): 37842816

約数和(自身を除く): 19184944

約数列:

[1, 2, 4, 8, 16, 43, 47, 86, 94, 172, 188, 344, 376, 577, 688, 752, 1154, 2021, 2308, 4042, 4616, 8084, 9232, 16168, 24811, 27119, 32336, 49622, 54238, 99244, 108476, 198488, 216952, 396976, 433904, 1166117, 2332234, 4664468, 9328936, 18657872]

約数ペア:

[(1, 18657872), (2, 9328936), (4, 4664468), (8, 2332234), (16, 1166117), (43, 433904), (47, 396976), (86, 216952), (94, 198488), (172, 108476), (188, 99244), (344, 54238), (376, 49622), (577, 32336), (688, 27119), (752, 24811), (1154, 16168), (2021, 9232), (2308, 8084), (4042, 4616)]