890997020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1\times {\mathrm{1933}}^1$

素因数の和:3174

約数の個数: 48

約数和(自身を含む): 1972215840

約数和(自身を除く): 1081218820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1213, 1933, 2426, 3866, 4852, 6065, 7732, 9665, 12130, 19330, 23047, 24260, 36727, 38660, 46094, 73454, 92188, 115235, 146908, 183635, 230470, 367270, 460940, 734540, 2344729, 4689458, 9378916, 11723645, 23447290, 44549851, 46894580, 89099702, 178199404, 222749255, 445498510, 890997020]

約数ペア:

[(1, 890997020), (2, 445498510), (4, 222749255), (5, 178199404), (10, 89099702), (19, 46894580), (20, 44549851), (38, 23447290), (76, 11723645), (95, 9378916), (190, 4689458), (380, 2344729), (1213, 734540), (1933, 460940), (2426, 367270), (3866, 230470), (4852, 183635), (6065, 146908), (7732, 115235), (9665, 92188), (12130, 73454), (19330, 46094), (23047, 38660), (24260, 36727)]