1989661555

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{9473}}^1$

素因数の和:9855

約数の個数: 32

約数和(自身を含む): 2897679744

約数和(自身を除く): 908018189

約数列:

[1, 5, 7, 17, 35, 85, 119, 353, 595, 1765, 2471, 6001, 9473, 12355, 30005, 42007, 47365, 66311, 161041, 210035, 331555, 805205, 1127287, 3343969, 5636435, 16719845, 23407783, 56847473, 117038915, 284237365, 397932311, 1989661555]

約数ペア:

[(1, 1989661555), (5, 397932311), (7, 284237365), (17, 117038915), (35, 56847473), (85, 23407783), (119, 16719845), (353, 5636435), (595, 3343969), (1765, 1127287), (2471, 805205), (6001, 331555), (9473, 210035), (12355, 161041), (30005, 66311), (42007, 47365)]