20311680

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:242

約数の個数: 128

約数和(自身を含む): 66096000

約数和(自身を除く): 45784320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 71, 80, 96, 120, 128, 142, 149, 160, 192, 213, 240, 284, 298, 320, 355, 384, 426, 447, 480, 568, 596, 640, 710, 745, 852, 894, 960, 1065, 1136, 1192, 1420, 1490, 1704, 1788, 1920, 2130, 2235, 2272, 2384, 2840, 2980, 3408, 3576, 4260, 4470, 4544, 4768, 5680, 5960, 6816, 7152, 8520, 8940, 9088, 9536, 10579, 11360, 11920, 13632, 14304, 17040, 17880, 19072, 21158, 22720, 23840, 27264, 28608, 31737, 34080, 35760, 42316, 45440, 47680, 52895, 57216, 63474, 68160, 71520, 84632, 95360, 105790, 126948, 136320, 143040, 158685, 169264, 211580, 253896, 286080, 317370, 338528, 423160, 507792, 634740, 677056, 846320, 1015584, 1269480, 1354112, 1692640, 2031168, 2538960, 3385280, 4062336, 5077920, 6770560, 10155840, 20311680]

約数ペア:

[(1, 20311680), (2, 10155840), (3, 6770560), (4, 5077920), (5, 4062336), (6, 3385280), (8, 2538960), (10, 2031168), (12, 1692640), (15, 1354112), (16, 1269480), (20, 1015584), (24, 846320), (30, 677056), (32, 634740), (40, 507792), (48, 423160), (60, 338528), (64, 317370), (71, 286080), (80, 253896), (96, 211580), (120, 169264), (128, 158685), (142, 143040), (149, 136320), (160, 126948), (192, 105790), (213, 95360), (240, 84632), (284, 71520), (298, 68160), (320, 63474), (355, 57216), (384, 52895), (426, 47680), (447, 45440), (480, 42316), (568, 35760), (596, 34080), (640, 31737), (710, 28608), (745, 27264), (852, 23840), (894, 22720), (960, 21158), (1065, 19072), (1136, 17880), (1192, 17040), (1420, 14304), (1490, 13632), (1704, 11920), (1788, 11360), (1920, 10579), (2130, 9536), (2235, 9088), (2272, 8940), (2384, 8520), (2840, 7152), (2980, 6816), (3408, 5960), (3576, 5680), (4260, 4768), (4470, 4544)]