1556285420

素因数分解:

$2^2\times 5^1\times {\mathrm{77814271}}^1$

素因数の和:77814280

約数の個数: 12

約数和(自身を含む): 3268199424

約数和(自身を除く): 1711914004

約数列:

[1, 2, 4, 5, 10, 20, 77814271, 155628542, 311257084, 389071355, 778142710, 1556285420]

約数ペア:

[(1, 1556285420), (2, 778142710), (4, 389071355), (5, 311257084), (10, 155628542), (20, 77814271)]