20002820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52639}}^1$

素因数の和:52667

約数の個数: 24

約数和(自身を含む): 44217600

約数和(自身を除く): 24214780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 52639, 105278, 210556, 263195, 526390, 1000141, 1052780, 2000282, 4000564, 5000705, 10001410, 20002820]

約数ペア:

[(1, 20002820), (2, 10001410), (4, 5000705), (5, 4000564), (10, 2000282), (19, 1052780), (20, 1000141), (38, 526390), (76, 263195), (95, 210556), (190, 105278), (380, 52639)]