255945460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1\times {\mathrm{829}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 552182400

約数和(自身を除く): 296236940

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 359, 430, 718, 829, 860, 1436, 1658, 1795, 3316, 3590, 4145, 7180, 8290, 15437, 16580, 30874, 35647, 61748, 71294, 77185, 142588, 154370, 178235, 297611, 308740, 356470, 595222, 712940, 1190444, 1488055, 2976110, 5952220, 12797273, 25594546, 51189092, 63986365, 127972730, 255945460]

約数ペア:

[(1, 255945460), (2, 127972730), (4, 63986365), (5, 51189092), (10, 25594546), (20, 12797273), (43, 5952220), (86, 2976110), (172, 1488055), (215, 1190444), (359, 712940), (430, 595222), (718, 356470), (829, 308740), (860, 297611), (1436, 178235), (1658, 154370), (1795, 142588), (3316, 77185), (3590, 71294), (4145, 61748), (7180, 35647), (8290, 30874), (15437, 16580)]