131286820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{2687}}^1$

素因数の和:3052

約数の個数: 48

約数和(自身を含む): 316108800

約数和(自身を除く): 184821980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 349, 698, 1396, 1745, 2443, 2687, 3490, 4886, 5374, 6980, 9772, 10748, 12215, 13435, 18809, 24430, 26870, 37618, 48860, 53740, 75236, 94045, 188090, 376180, 937763, 1875526, 3751052, 4688815, 6564341, 9377630, 13128682, 18755260, 26257364, 32821705, 65643410, 131286820]

約数ペア:

[(1, 131286820), (2, 65643410), (4, 32821705), (5, 26257364), (7, 18755260), (10, 13128682), (14, 9377630), (20, 6564341), (28, 4688815), (35, 3751052), (70, 1875526), (140, 937763), (349, 376180), (698, 188090), (1396, 94045), (1745, 75236), (2443, 53740), (2687, 48860), (3490, 37618), (4886, 26870), (5374, 24430), (6980, 18809), (9772, 13435), (10748, 12215)]