129873280

素因数分解:

$2^7\times 5^1\times {\mathrm{307}}^1\times {\mathrm{661}}^1$

素因数の和:987

約数の個数: 64

約数和(自身を含む): 311960880

約数和(自身を除く): 182087600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 307, 320, 614, 640, 661, 1228, 1322, 1535, 2456, 2644, 3070, 3305, 4912, 5288, 6140, 6610, 9824, 10576, 12280, 13220, 19648, 21152, 24560, 26440, 39296, 42304, 49120, 52880, 84608, 98240, 105760, 196480, 202927, 211520, 405854, 423040, 811708, 1014635, 1623416, 2029270, 3246832, 4058540, 6493664, 8117080, 12987328, 16234160, 25974656, 32468320, 64936640, 129873280]

約数ペア:

[(1, 129873280), (2, 64936640), (4, 32468320), (5, 25974656), (8, 16234160), (10, 12987328), (16, 8117080), (20, 6493664), (32, 4058540), (40, 3246832), (64, 2029270), (80, 1623416), (128, 1014635), (160, 811708), (307, 423040), (320, 405854), (614, 211520), (640, 202927), (661, 196480), (1228, 105760), (1322, 98240), (1535, 84608), (2456, 52880), (2644, 49120), (3070, 42304), (3305, 39296), (4912, 26440), (5288, 24560), (6140, 21152), (6610, 19648), (9824, 13220), (10576, 12280)]