20747116

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{653}}^1$

素因数の和:730

約数の個数: 36

約数和(自身を含む): 40213152

約数和(自身を除く): 19466036

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 169, 188, 338, 611, 653, 676, 1222, 1306, 2444, 2612, 7943, 8489, 15886, 16978, 30691, 31772, 33956, 61382, 110357, 122764, 220714, 398983, 441428, 797966, 1595932, 5186779, 10373558, 20747116]

約数ペア:

[(1, 20747116), (2, 10373558), (4, 5186779), (13, 1595932), (26, 797966), (47, 441428), (52, 398983), (94, 220714), (169, 122764), (188, 110357), (338, 61382), (611, 33956), (653, 31772), (676, 30691), (1222, 16978), (1306, 15886), (2444, 8489), (2612, 7943)]