18880336

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1693}}^1$

素因数の和:1759

約数の個数: 40

約数和(自身を含む): 39700584

約数和(自身を除く): 20820248

約数列:

[1, 2, 4, 8, 16, 17, 34, 41, 68, 82, 136, 164, 272, 328, 656, 697, 1394, 1693, 2788, 3386, 5576, 6772, 11152, 13544, 27088, 28781, 57562, 69413, 115124, 138826, 230248, 277652, 460496, 555304, 1110608, 1180021, 2360042, 4720084, 9440168, 18880336]

約数ペア:

[(1, 18880336), (2, 9440168), (4, 4720084), (8, 2360042), (16, 1180021), (17, 1110608), (34, 555304), (41, 460496), (68, 277652), (82, 230248), (136, 138826), (164, 115124), (272, 69413), (328, 57562), (656, 28781), (697, 27088), (1394, 13544), (1693, 11152), (2788, 6772), (3386, 5576)]