20937428

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 37477440

約数和(自身を除く): 16540012

約数列:

[1, 2, 4, 89, 103, 178, 206, 356, 412, 571, 1142, 2284, 9167, 18334, 36668, 50819, 58813, 101638, 117626, 203276, 235252, 5234357, 10468714, 20937428]

約数ペア:

[(1, 20937428), (2, 10468714), (4, 5234357), (89, 235252), (103, 203276), (178, 117626), (206, 101638), (356, 58813), (412, 50819), (571, 36668), (1142, 18334), (2284, 9167)]