81403472

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{661}}^1$

素因数の和:891

約数の個数: 40

約数和(自身を含む): 162534240

約数和(自身を除く): 81130768

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 179, 344, 358, 661, 688, 716, 1322, 1432, 2644, 2864, 5288, 7697, 10576, 15394, 28423, 30788, 56846, 61576, 113692, 118319, 123152, 227384, 236638, 454768, 473276, 946552, 1893104, 5087717, 10175434, 20350868, 40701736, 81403472]

約数ペア:

[(1, 81403472), (2, 40701736), (4, 20350868), (8, 10175434), (16, 5087717), (43, 1893104), (86, 946552), (172, 473276), (179, 454768), (344, 236638), (358, 227384), (661, 123152), (688, 118319), (716, 113692), (1322, 61576), (1432, 56846), (2644, 30788), (2864, 28423), (5288, 15394), (7697, 10576)]