20820200

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5479}}^1$

素因数の和:5514

約数の個数: 48

約数和(自身を含む): 50964000

約数和(自身を除く): 30143800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5479, 10958, 21916, 27395, 43832, 54790, 104101, 109580, 136975, 208202, 219160, 273950, 416404, 520505, 547900, 832808, 1041010, 1095800, 2082020, 2602525, 4164040, 5205050, 10410100, 20820200]

約数ペア:

[(1, 20820200), (2, 10410100), (4, 5205050), (5, 4164040), (8, 2602525), (10, 2082020), (19, 1095800), (20, 1041010), (25, 832808), (38, 547900), (40, 520505), (50, 416404), (76, 273950), (95, 219160), (100, 208202), (152, 136975), (190, 109580), (200, 104101), (380, 54790), (475, 43832), (760, 27395), (950, 21916), (1900, 10958), (3800, 5479)]