1397420

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{653}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 2966544

約数和(自身を除く): 1569124

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 653, 1070, 1306, 2140, 2612, 3265, 6530, 13060, 69871, 139742, 279484, 349355, 698710, 1397420]

約数ペア:

[(1, 1397420), (2, 698710), (4, 349355), (5, 279484), (10, 139742), (20, 69871), (107, 13060), (214, 6530), (428, 3265), (535, 2612), (653, 2140), (1070, 1306)]