19999910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6079}}^1$

素因数の和:6140

約数の個数: 32

約数和(自身を含む): 42024960

約数和(自身を除く): 22025050

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 70, 94, 235, 329, 470, 658, 1645, 3290, 6079, 12158, 30395, 42553, 60790, 85106, 212765, 285713, 425530, 571426, 1428565, 1999991, 2857130, 3999982, 9999955, 19999910]

約数ペア:

[(1, 19999910), (2, 9999955), (5, 3999982), (7, 2857130), (10, 1999991), (14, 1428565), (35, 571426), (47, 425530), (70, 285713), (94, 212765), (235, 85106), (329, 60790), (470, 42553), (658, 30395), (1645, 12158), (3290, 6079)]