20017900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{28597}}^1$

素因数の和:28618

約数の個数: 36

約数和(自身を含む): 49646128

約数和(自身を除く): 29628228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 28597, 57194, 114388, 142985, 200179, 285970, 400358, 571940, 714925, 800716, 1000895, 1429850, 2001790, 2859700, 4003580, 5004475, 10008950, 20017900]

約数ペア:

[(1, 20017900), (2, 10008950), (4, 5004475), (5, 4003580), (7, 2859700), (10, 2001790), (14, 1429850), (20, 1000895), (25, 800716), (28, 714925), (35, 571940), (50, 400358), (70, 285970), (100, 200179), (140, 142985), (175, 114388), (350, 57194), (700, 28597)]