20187964480

素因数分解:

$2^6\times 5^1\times {\mathrm{461}}^1\times {\mathrm{136849}}^1$

素因数の和:137327

約数の個数: 56

約数和(自身を含む): 48177221400

約数和(自身を除く): 27989256920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 461, 922, 1844, 2305, 3688, 4610, 7376, 9220, 14752, 18440, 29504, 36880, 73760, 136849, 147520, 273698, 547396, 684245, 1094792, 1368490, 2189584, 2736980, 4379168, 5473960, 8758336, 10947920, 21895840, 43791680, 63087389, 126174778, 252349556, 315436945, 504699112, 630873890, 1009398224, 1261747780, 2018796448, 2523495560, 4037592896, 5046991120, 10093982240, 20187964480]

約数ペア:

[(1, 20187964480), (2, 10093982240), (4, 5046991120), (5, 4037592896), (8, 2523495560), (10, 2018796448), (16, 1261747780), (20, 1009398224), (32, 630873890), (40, 504699112), (64, 315436945), (80, 252349556), (160, 126174778), (320, 63087389), (461, 43791680), (922, 21895840), (1844, 10947920), (2305, 8758336), (3688, 5473960), (4610, 4379168), (7376, 2736980), (9220, 2189584), (14752, 1368490), (18440, 1094792), (29504, 684245), (36880, 547396), (73760, 273698), (136849, 147520)]