19878794

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:702

約数の個数: 24

約数和(自身を含む): 32658912

約数和(自身を除く): 12780118

約数列:

[1, 2, 13, 26, 103, 169, 206, 338, 571, 1142, 1339, 2678, 7423, 14846, 17407, 34814, 58813, 96499, 117626, 192998, 764569, 1529138, 9939397, 19878794]

約数ペア:

[(1, 19878794), (2, 9939397), (13, 1529138), (26, 764569), (103, 192998), (169, 117626), (206, 96499), (338, 58813), (571, 34814), (1142, 17407), (1339, 14846), (2678, 7423)]