289370420

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{22157}}^1$

素因数の和:22819

約数の個数: 24

約数和(自身を含む): 608635944

約数和(自身を除く): 319265524

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2612, 3265, 6530, 13060, 22157, 44314, 88628, 110785, 221570, 443140, 14468521, 28937042, 57874084, 72342605, 144685210, 289370420]

約数ペア:

[(1, 289370420), (2, 144685210), (4, 72342605), (5, 57874084), (10, 28937042), (20, 14468521), (653, 443140), (1306, 221570), (2612, 110785), (3265, 88628), (6530, 44314), (13060, 22157)]