87090280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21557}}^1$

素因数の和:21669

約数の個数: 32

約数和(自身を含む): 197902440

約数和(自身を除く): 110812160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 21557, 43114, 86228, 107785, 172456, 215570, 431140, 862280, 2177257, 4354514, 8709028, 10886285, 17418056, 21772570, 43545140, 87090280]

約数ペア:

[(1, 87090280), (2, 43545140), (4, 21772570), (5, 17418056), (8, 10886285), (10, 8709028), (20, 4354514), (40, 2177257), (101, 862280), (202, 431140), (404, 215570), (505, 172456), (808, 107785), (1010, 86228), (2020, 43114), (4040, 21557)]