20617945

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7001}}^1$

素因数の和:7056

約数の個数: 16

約数和(自身を含む): 26887680

約数和(自身を除く): 6269735

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 7001, 35005, 133019, 217031, 665095, 1085155, 4123589, 20617945]

約数ペア:

[(1, 20617945), (5, 4123589), (19, 1085155), (31, 665095), (95, 217031), (155, 133019), (589, 35005), (2945, 7001)]