257836535

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 381179520

約数和(自身を除く): 123342985

約数列:

[1, 5, 11, 17, 29, 37, 55, 85, 145, 185, 187, 257, 319, 407, 493, 629, 935, 1073, 1285, 1595, 2035, 2465, 2827, 3145, 4369, 5365, 5423, 6919, 7453, 9509, 11803, 14135, 18241, 21845, 27115, 34595, 37265, 47545, 48059, 59015, 81983, 91205, 104599, 126701, 161653, 200651, 240295, 275761, 409915, 522995, 633505, 808265, 1003255, 1378805, 1393711, 1778183, 3033371, 4687937, 6968555, 8890915, 15166855, 23439685, 51567307, 257836535]

約数ペア:

[(1, 257836535), (5, 51567307), (11, 23439685), (17, 15166855), (29, 8890915), (37, 6968555), (55, 4687937), (85, 3033371), (145, 1778183), (185, 1393711), (187, 1378805), (257, 1003255), (319, 808265), (407, 633505), (493, 522995), (629, 409915), (935, 275761), (1073, 240295), (1285, 200651), (1595, 161653), (2035, 126701), (2465, 104599), (2827, 91205), (3145, 81983), (4369, 59015), (5365, 48059), (5423, 47545), (6919, 37265), (7453, 34595), (9509, 27115), (11803, 21845), (14135, 18241)]