208403793

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 348364800

約数和(自身を除く): 139961007

約数列:

[1, 3, 9, 13, 27, 31, 39, 93, 107, 117, 179, 279, 321, 351, 403, 537, 837, 963, 1209, 1391, 1611, 2327, 2889, 3317, 3627, 4173, 4833, 5549, 6981, 9951, 10881, 12519, 16647, 19153, 20943, 29853, 37557, 43121, 49941, 57459, 62829, 72137, 89559, 129363, 149823, 172377, 216411, 248989, 388089, 517131, 593743, 649233, 746967, 1164267, 1781229, 1947699, 2240901, 5343687, 6722703, 7718659, 16031061, 23155977, 69467931, 208403793]

約数ペア:

[(1, 208403793), (3, 69467931), (9, 23155977), (13, 16031061), (27, 7718659), (31, 6722703), (39, 5343687), (93, 2240901), (107, 1947699), (117, 1781229), (179, 1164267), (279, 746967), (321, 649233), (351, 593743), (403, 517131), (537, 388089), (837, 248989), (963, 216411), (1209, 172377), (1391, 149823), (1611, 129363), (2327, 89559), (2889, 72137), (3317, 62829), (3627, 57459), (4173, 49941), (4833, 43121), (5549, 37557), (6981, 29853), (9951, 20943), (10881, 19153), (12519, 16647)]