19877945

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1\times {\mathrm{337}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 24530688

約数和(自身を除く): 4652743

約数列:

[1, 5, 47, 235, 251, 337, 1255, 1685, 11797, 15839, 58985, 79195, 84587, 422935, 3975589, 19877945]

約数ペア:

[(1, 19877945), (5, 3975589), (47, 422935), (235, 84587), (251, 79195), (337, 58985), (1255, 15839), (1685, 11797)]