20720612

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{6451}}^1$

素因数の和:6539

約数の個数: 24

約数和(自身を含む): 40105632

約数和(自身を除く): 19385020

約数列:

[1, 2, 4, 11, 22, 44, 73, 146, 292, 803, 1606, 3212, 6451, 12902, 25804, 70961, 141922, 283844, 470923, 941846, 1883692, 5180153, 10360306, 20720612]

約数ペア:

[(1, 20720612), (2, 10360306), (4, 5180153), (11, 1883692), (22, 941846), (44, 470923), (73, 283844), (146, 141922), (292, 70961), (803, 25804), (1606, 12902), (3212, 6451)]