490393390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{20753}}^1$

素因数の和:20916

約数の個数: 32

約数和(自身を含む): 941401440

約数和(自身を除く): 451008050

約数列:

[1, 2, 5, 10, 17, 34, 85, 139, 170, 278, 695, 1390, 2363, 4726, 11815, 20753, 23630, 41506, 103765, 207530, 352801, 705602, 1764005, 2884667, 3528010, 5769334, 14423335, 28846670, 49039339, 98078678, 245196695, 490393390]

約数ペア:

[(1, 490393390), (2, 245196695), (5, 98078678), (10, 49039339), (17, 28846670), (34, 14423335), (85, 5769334), (139, 3528010), (170, 2884667), (278, 1764005), (695, 705602), (1390, 352801), (2363, 207530), (4726, 103765), (11815, 41506), (20753, 23630)]