138331520

素因数分解:

$2^7\times 5^1\times {\mathrm{331}}^1\times {\mathrm{653}}^1$

素因数の和:1003

約数の個数: 64

約数和(自身を含む): 332205840

約数和(自身を除く): 193874320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 331, 640, 653, 662, 1306, 1324, 1655, 2612, 2648, 3265, 3310, 5224, 5296, 6530, 6620, 10448, 10592, 13060, 13240, 20896, 21184, 26120, 26480, 41792, 42368, 52240, 52960, 83584, 104480, 105920, 208960, 211840, 216143, 417920, 432286, 864572, 1080715, 1729144, 2161430, 3458288, 4322860, 6916576, 8645720, 13833152, 17291440, 27666304, 34582880, 69165760, 138331520]

約数ペア:

[(1, 138331520), (2, 69165760), (4, 34582880), (5, 27666304), (8, 17291440), (10, 13833152), (16, 8645720), (20, 6916576), (32, 4322860), (40, 3458288), (64, 2161430), (80, 1729144), (128, 1080715), (160, 864572), (320, 432286), (331, 417920), (640, 216143), (653, 211840), (662, 208960), (1306, 105920), (1324, 104480), (1655, 83584), (2612, 52960), (2648, 52240), (3265, 42368), (3310, 41792), (5224, 26480), (5296, 26120), (6530, 21184), (6620, 20896), (10448, 13240), (10592, 13060)]