257130819

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{613}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 429112320

約数和(自身を除く): 171981501

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 223, 613, 627, 669, 1839, 1881, 2007, 2453, 4237, 5517, 6743, 7359, 11647, 12711, 20229, 22077, 34941, 38133, 46607, 60687, 104823, 128117, 136699, 139821, 384351, 410097, 419463, 1153053, 1230291, 1503689, 2597281, 4511067, 7791843, 13533201, 23375529, 28570091, 85710273, 257130819]

約数ペア:

[(1, 257130819), (3, 85710273), (9, 28570091), (11, 23375529), (19, 13533201), (33, 7791843), (57, 4511067), (99, 2597281), (171, 1503689), (209, 1230291), (223, 1153053), (613, 419463), (627, 410097), (669, 384351), (1839, 139821), (1881, 136699), (2007, 128117), (2453, 104823), (4237, 60687), (5517, 46607), (6743, 38133), (7359, 34941), (11647, 22077), (12711, 20229)]