215187020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{1627}}^1$

素因数の和:2042

約数の個数: 48

約数和(自身を含む): 479999520

約数和(自身を除く): 264812500

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 389, 778, 1556, 1627, 1945, 3254, 3890, 6508, 6613, 7780, 8135, 13226, 16270, 26452, 27659, 32540, 33065, 55318, 66130, 110636, 132260, 138295, 276590, 553180, 632903, 1265806, 2531612, 3164515, 6329030, 10759351, 12658060, 21518702, 43037404, 53796755, 107593510, 215187020]

約数ペア:

[(1, 215187020), (2, 107593510), (4, 53796755), (5, 43037404), (10, 21518702), (17, 12658060), (20, 10759351), (34, 6329030), (68, 3164515), (85, 2531612), (170, 1265806), (340, 632903), (389, 553180), (778, 276590), (1556, 138295), (1627, 132260), (1945, 110636), (3254, 66130), (3890, 55318), (6508, 33065), (6613, 32540), (7780, 27659), (8135, 26452), (13226, 16270)]