21490228

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{607}}^1$

素因数の和:831

約数の個数: 24

約数和(自身を含む): 38610432

約数和(自身を除く): 17120204

約数列:

[1, 2, 4, 53, 106, 167, 212, 334, 607, 668, 1214, 2428, 8851, 17702, 32171, 35404, 64342, 101369, 128684, 202738, 405476, 5372557, 10745114, 21490228]

約数ペア:

[(1, 21490228), (2, 10745114), (4, 5372557), (53, 405476), (106, 202738), (167, 128684), (212, 101369), (334, 64342), (607, 35404), (668, 32171), (1214, 17702), (2428, 8851)]