20810439760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{132113}}^1$

素因数の和:132316

約数の個数: 80

約数和(自身を含む): 53078120640

約数和(自身を除く): 32267680880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 179, 220, 358, 440, 716, 880, 895, 1432, 1790, 1969, 2864, 3580, 3938, 7160, 7876, 9845, 14320, 15752, 19690, 31504, 39380, 78760, 132113, 157520, 264226, 528452, 660565, 1056904, 1321130, 1453243, 2113808, 2642260, 2906486, 5284520, 5812972, 7266215, 10569040, 11625944, 14532430, 23251888, 23648227, 29064860, 47296454, 58129720, 94592908, 116259440, 118241135, 189185816, 236482270, 260130497, 378371632, 472964540, 520260994, 945929080, 1040521988, 1300652485, 1891858160, 2081043976, 2601304970, 4162087952, 5202609940, 10405219880, 20810439760]

約数ペア:

[(1, 20810439760), (2, 10405219880), (4, 5202609940), (5, 4162087952), (8, 2601304970), (10, 2081043976), (11, 1891858160), (16, 1300652485), (20, 1040521988), (22, 945929080), (40, 520260994), (44, 472964540), (55, 378371632), (80, 260130497), (88, 236482270), (110, 189185816), (176, 118241135), (179, 116259440), (220, 94592908), (358, 58129720), (440, 47296454), (716, 29064860), (880, 23648227), (895, 23251888), (1432, 14532430), (1790, 11625944), (1969, 10569040), (2864, 7266215), (3580, 5812972), (3938, 5284520), (7160, 2906486), (7876, 2642260), (9845, 2113808), (14320, 1453243), (15752, 1321130), (19690, 1056904), (31504, 660565), (39380, 528452), (78760, 264226), (132113, 157520)]