21532160

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:683

約数の個数: 80

約数和(自身を含む): 55683936

約数和(自身を除く): 34151776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 647, 832, 1040, 1280, 1294, 1664, 2080, 2560, 2588, 3235, 3328, 4160, 5176, 6470, 6656, 8320, 8411, 10352, 12940, 16640, 16822, 20704, 25880, 33280, 33644, 41408, 42055, 51760, 67288, 82816, 84110, 103520, 134576, 165632, 168220, 207040, 269152, 331264, 336440, 414080, 538304, 672880, 828160, 1076608, 1345760, 1656320, 2153216, 2691520, 4306432, 5383040, 10766080, 21532160]

約数ペア:

[(1, 21532160), (2, 10766080), (4, 5383040), (5, 4306432), (8, 2691520), (10, 2153216), (13, 1656320), (16, 1345760), (20, 1076608), (26, 828160), (32, 672880), (40, 538304), (52, 414080), (64, 336440), (65, 331264), (80, 269152), (104, 207040), (128, 168220), (130, 165632), (160, 134576), (208, 103520), (256, 84110), (260, 82816), (320, 67288), (416, 51760), (512, 42055), (520, 41408), (640, 33644), (647, 33280), (832, 25880), (1040, 20704), (1280, 16822), (1294, 16640), (1664, 12940), (2080, 10352), (2560, 8411), (2588, 8320), (3235, 6656), (3328, 6470), (4160, 5176)]