87771380

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{22277}}^1$

素因数の和:22483

約数の個数: 24

約数和(自身を含む): 185263848

約数和(自身を除く): 97492468

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 22277, 44554, 89108, 111385, 222770, 445540, 4388569, 8777138, 17554276, 21942845, 43885690, 87771380]

約数ペア:

[(1, 87771380), (2, 43885690), (4, 21942845), (5, 17554276), (10, 8777138), (20, 4388569), (197, 445540), (394, 222770), (788, 111385), (985, 89108), (1970, 44554), (3940, 22277)]