21297438

素因数分解:

$2^1\times 3^3\times {\mathrm{521}}^1\times {\mathrm{757}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 47481120

約数和(自身を除く): 26183682

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 521, 757, 1042, 1514, 1563, 2271, 3126, 4542, 4689, 6813, 9378, 13626, 14067, 20439, 28134, 40878, 394397, 788794, 1183191, 2366382, 3549573, 7099146, 10648719, 21297438]

約数ペア:

[(1, 21297438), (2, 10648719), (3, 7099146), (6, 3549573), (9, 2366382), (18, 1183191), (27, 788794), (54, 394397), (521, 40878), (757, 28134), (1042, 20439), (1514, 14067), (1563, 13626), (2271, 9378), (3126, 6813), (4542, 4689)]