81552560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53653}}^1$

素因数の和:53685

約数の個数: 40

約数和(自身を含む): 199592880

約数和(自身を除く): 118040320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 53653, 107306, 214612, 268265, 429224, 536530, 858448, 1019407, 1073060, 2038814, 2146120, 4077628, 4292240, 5097035, 8155256, 10194070, 16310512, 20388140, 40776280, 81552560]

約数ペア:

[(1, 81552560), (2, 40776280), (4, 20388140), (5, 16310512), (8, 10194070), (10, 8155256), (16, 5097035), (19, 4292240), (20, 4077628), (38, 2146120), (40, 2038814), (76, 1073060), (80, 1019407), (95, 858448), (152, 536530), (190, 429224), (304, 268265), (380, 214612), (760, 107306), (1520, 53653)]