21382020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10799}}^1$

素因数の和:10825

約数の個数: 72

約数和(自身を含む): 70761600

約数和(自身を除く): 49379580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10799, 21598, 32397, 43196, 53995, 64794, 97191, 107990, 118789, 129588, 161985, 194382, 215980, 237578, 323970, 356367, 388764, 475156, 485955, 593945, 647940, 712734, 971910, 1069101, 1187890, 1425468, 1781835, 1943820, 2138202, 2375780, 3563670, 4276404, 5345505, 7127340, 10691010, 21382020]

約数ペア:

[(1, 21382020), (2, 10691010), (3, 7127340), (4, 5345505), (5, 4276404), (6, 3563670), (9, 2375780), (10, 2138202), (11, 1943820), (12, 1781835), (15, 1425468), (18, 1187890), (20, 1069101), (22, 971910), (30, 712734), (33, 647940), (36, 593945), (44, 485955), (45, 475156), (55, 388764), (60, 356367), (66, 323970), (90, 237578), (99, 215980), (110, 194382), (132, 161985), (165, 129588), (180, 118789), (198, 107990), (220, 97191), (330, 64794), (396, 53995), (495, 43196), (660, 32397), (990, 21598), (1980, 10799)]