81490640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13229}}^1$

素因数の和:13260

約数の個数: 80

約数和(自身を含む): 236234880

約数和(自身を除く): 154744240

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 6160, 13229, 26458, 52916, 66145, 92603, 105832, 132290, 145519, 185206, 211664, 264580, 291038, 370412, 463015, 529160, 582076, 727595, 740824, 926030, 1018633, 1058320, 1164152, 1455190, 1481648, 1852060, 2037266, 2328304, 2910380, 3704120, 4074532, 5093165, 5820760, 7408240, 8149064, 10186330, 11641520, 16298128, 20372660, 40745320, 81490640]

約数ペア:

[(1, 81490640), (2, 40745320), (4, 20372660), (5, 16298128), (7, 11641520), (8, 10186330), (10, 8149064), (11, 7408240), (14, 5820760), (16, 5093165), (20, 4074532), (22, 3704120), (28, 2910380), (35, 2328304), (40, 2037266), (44, 1852060), (55, 1481648), (56, 1455190), (70, 1164152), (77, 1058320), (80, 1018633), (88, 926030), (110, 740824), (112, 727595), (140, 582076), (154, 529160), (176, 463015), (220, 370412), (280, 291038), (308, 264580), (385, 211664), (440, 185206), (560, 145519), (616, 132290), (770, 105832), (880, 92603), (1232, 66145), (1540, 52916), (3080, 26458), (6160, 13229)]