18717986

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 17777374

約数列:

[1, 2, 7, 14, 17, 31, 34, 43, 59, 62, 86, 118, 119, 217, 238, 301, 413, 434, 527, 602, 731, 826, 1003, 1054, 1333, 1462, 1829, 2006, 2537, 2666, 3658, 3689, 5074, 5117, 7021, 7378, 9331, 10234, 12803, 14042, 17759, 18662, 22661, 25606, 31093, 35518, 43129, 45322, 62186, 78647, 86258, 157294, 158627, 217651, 301903, 317254, 435302, 550529, 603806, 1101058, 1336999, 2673998, 9358993, 18717986]

約数ペア:

[(1, 18717986), (2, 9358993), (7, 2673998), (14, 1336999), (17, 1101058), (31, 603806), (34, 550529), (43, 435302), (59, 317254), (62, 301903), (86, 217651), (118, 158627), (119, 157294), (217, 86258), (238, 78647), (301, 62186), (413, 45322), (434, 43129), (527, 35518), (602, 31093), (731, 25606), (826, 22661), (1003, 18662), (1054, 17759), (1333, 14042), (1462, 12803), (1829, 10234), (2006, 9331), (2537, 7378), (2666, 7021), (3658, 5117), (3689, 5074)]