28747460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205339}}^1$

素因数の和:205355

約数の個数: 24

約数和(自身を含む): 68994240

約数和(自身を除く): 40246780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205339, 410678, 821356, 1026695, 1437373, 2053390, 2874746, 4106780, 5749492, 7186865, 14373730, 28747460]

約数ペア:

[(1, 28747460), (2, 14373730), (4, 7186865), (5, 5749492), (7, 4106780), (10, 2874746), (14, 2053390), (20, 1437373), (28, 1026695), (35, 821356), (70, 410678), (140, 205339)]