20973316

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 45584896

約数和(自身を除く): 24611580

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 157, 182, 314, 364, 367, 628, 734, 1099, 1468, 2041, 2198, 2569, 4082, 4396, 4771, 5138, 8164, 9542, 10276, 14287, 19084, 28574, 33397, 57148, 57619, 66794, 115238, 133588, 230476, 403333, 749047, 806666, 1498094, 1613332, 2996188, 5243329, 10486658, 20973316]

約数ペア:

[(1, 20973316), (2, 10486658), (4, 5243329), (7, 2996188), (13, 1613332), (14, 1498094), (26, 806666), (28, 749047), (52, 403333), (91, 230476), (157, 133588), (182, 115238), (314, 66794), (364, 57619), (367, 57148), (628, 33397), (734, 28574), (1099, 19084), (1468, 14287), (2041, 10276), (2198, 9542), (2569, 8164), (4082, 5138), (4396, 4771)]