19517020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{419}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 24300740

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 274, 340, 419, 548, 685, 838, 1370, 1676, 2095, 2329, 2740, 4190, 4658, 7123, 8380, 9316, 11645, 14246, 23290, 28492, 35615, 46580, 57403, 71230, 114806, 142460, 229612, 287015, 574030, 975851, 1148060, 1951702, 3903404, 4879255, 9758510, 19517020]

約数ペア:

[(1, 19517020), (2, 9758510), (4, 4879255), (5, 3903404), (10, 1951702), (17, 1148060), (20, 975851), (34, 574030), (68, 287015), (85, 229612), (137, 142460), (170, 114806), (274, 71230), (340, 57403), (419, 46580), (548, 35615), (685, 28492), (838, 23290), (1370, 14246), (1676, 11645), (2095, 9316), (2329, 8380), (2740, 7123), (4190, 4658)]