257130280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{584387}}^1$

素因数の和:584409

約数の個数: 32

約数和(自身を含む): 631139040

約数和(自身を除く): 374008760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 584387, 1168774, 2337548, 2921935, 4675096, 5843870, 6428257, 11687740, 12856514, 23375480, 25713028, 32141285, 51426056, 64282570, 128565140, 257130280]

約数ペア:

[(1, 257130280), (2, 128565140), (4, 64282570), (5, 51426056), (8, 32141285), (10, 25713028), (11, 23375480), (20, 12856514), (22, 11687740), (40, 6428257), (44, 5843870), (55, 4675096), (88, 2921935), (110, 2337548), (220, 1168774), (440, 584387)]