20900380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55001}}^1$

素因数の和:55029

約数の個数: 24

約数和(自身を含む): 46201680

約数和(自身を除く): 25301300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55001, 110002, 220004, 275005, 550010, 1045019, 1100020, 2090038, 4180076, 5225095, 10450190, 20900380]

約数ペア:

[(1, 20900380), (2, 10450190), (4, 5225095), (5, 4180076), (10, 2090038), (19, 1100020), (20, 1045019), (38, 550010), (76, 275005), (95, 220004), (190, 110002), (380, 55001)]