21401080

素因数分解:

$2^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{937}}^1$

素因数の和:1519

約数の個数: 32

約数和(自身を含む): 48288240

約数和(自身を除く): 26887160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 571, 937, 1142, 1874, 2284, 2855, 3748, 4568, 4685, 5710, 7496, 9370, 11420, 18740, 22840, 37480, 535027, 1070054, 2140108, 2675135, 4280216, 5350270, 10700540, 21401080]

約数ペア:

[(1, 21401080), (2, 10700540), (4, 5350270), (5, 4280216), (8, 2675135), (10, 2140108), (20, 1070054), (40, 535027), (571, 37480), (937, 22840), (1142, 18740), (1874, 11420), (2284, 9370), (2855, 7496), (3748, 5710), (4568, 4685)]