397712240

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{9767}}^1$

素因数の和:10289

約数の個数: 40

約数和(自身を含む): 926592480

約数和(自身を除く): 528880240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 2036, 2545, 4072, 5090, 8144, 9767, 10180, 19534, 20360, 39068, 40720, 48835, 78136, 97670, 156272, 195340, 390680, 781360, 4971403, 9942806, 19885612, 24857015, 39771224, 49714030, 79542448, 99428060, 198856120, 397712240]

約数ペア:

[(1, 397712240), (2, 198856120), (4, 99428060), (5, 79542448), (8, 49714030), (10, 39771224), (16, 24857015), (20, 19885612), (40, 9942806), (80, 4971403), (509, 781360), (1018, 390680), (2036, 195340), (2545, 156272), (4072, 97670), (5090, 78136), (8144, 48835), (9767, 40720), (10180, 39068), (19534, 20360)]