165006640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{108557}}^1$

素因数の和:108589

約数の個数: 40

約数和(自身を含む): 403835760

約数和(自身を除く): 238829120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 108557, 217114, 434228, 542785, 868456, 1085570, 1736912, 2062583, 2171140, 4125166, 4342280, 8250332, 8684560, 10312915, 16500664, 20625830, 33001328, 41251660, 82503320, 165006640]

約数ペア:

[(1, 165006640), (2, 82503320), (4, 41251660), (5, 33001328), (8, 20625830), (10, 16500664), (16, 10312915), (19, 8684560), (20, 8250332), (38, 4342280), (40, 4125166), (76, 2171140), (80, 2062583), (95, 1736912), (152, 1085570), (190, 868456), (304, 542785), (380, 434228), (760, 217114), (1520, 108557)]