1298732800

素因数分解:

$2^8\times 5^2\times {\mathrm{307}}^1\times {\mathrm{661}}^1$

素因数の和:994

約数の個数: 108

約数和(自身を含む): 3229916536

約数和(自身を除く): 1931183736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 307, 320, 400, 614, 640, 661, 800, 1228, 1280, 1322, 1535, 1600, 2456, 2644, 3070, 3200, 3305, 4912, 5288, 6140, 6400, 6610, 7675, 9824, 10576, 12280, 13220, 15350, 16525, 19648, 21152, 24560, 26440, 30700, 33050, 39296, 42304, 49120, 52880, 61400, 66100, 78592, 84608, 98240, 105760, 122800, 132200, 169216, 196480, 202927, 211520, 245600, 264400, 392960, 405854, 423040, 491200, 528800, 811708, 846080, 982400, 1014635, 1057600, 1623416, 1964800, 2029270, 2115200, 3246832, 4058540, 4230400, 5073175, 6493664, 8117080, 10146350, 12987328, 16234160, 20292700, 25974656, 32468320, 40585400, 51949312, 64936640, 81170800, 129873280, 162341600, 259746560, 324683200, 649366400, 1298732800]

約数ペア:

[(1, 1298732800), (2, 649366400), (4, 324683200), (5, 259746560), (8, 162341600), (10, 129873280), (16, 81170800), (20, 64936640), (25, 51949312), (32, 40585400), (40, 32468320), (50, 25974656), (64, 20292700), (80, 16234160), (100, 12987328), (128, 10146350), (160, 8117080), (200, 6493664), (256, 5073175), (307, 4230400), (320, 4058540), (400, 3246832), (614, 2115200), (640, 2029270), (661, 1964800), (800, 1623416), (1228, 1057600), (1280, 1014635), (1322, 982400), (1535, 846080), (1600, 811708), (2456, 528800), (2644, 491200), (3070, 423040), (3200, 405854), (3305, 392960), (4912, 264400), (5288, 245600), (6140, 211520), (6400, 202927), (6610, 196480), (7675, 169216), (9824, 132200), (10576, 122800), (12280, 105760), (13220, 98240), (15350, 84608), (16525, 78592), (19648, 66100), (21152, 61400), (24560, 52880), (26440, 49120), (30700, 42304), (33050, 39296)]