257702913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{283}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 413917504

約数和(自身を除く): 156214591

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 181, 283, 387, 543, 559, 849, 1629, 1677, 2353, 2547, 3679, 5031, 7059, 7783, 11037, 12169, 21177, 23349, 33111, 36507, 51223, 70047, 101179, 109521, 153669, 158197, 303537, 461007, 474591, 665899, 910611, 1423773, 1997697, 2202589, 5993091, 6607767, 19823301, 28633657, 85900971, 257702913]

約数ペア:

[(1, 257702913), (3, 85900971), (9, 28633657), (13, 19823301), (39, 6607767), (43, 5993091), (117, 2202589), (129, 1997697), (181, 1423773), (283, 910611), (387, 665899), (543, 474591), (559, 461007), (849, 303537), (1629, 158197), (1677, 153669), (2353, 109521), (2547, 101179), (3679, 70047), (5031, 51223), (7059, 36507), (7783, 33111), (11037, 23349), (12169, 21177)]