20254640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5167}}^1$

素因数の和:5194

約数の個数: 60

約数和(自身を含む): 54791136

約数和(自身を除く): 34536496

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5167, 10334, 20668, 25835, 36169, 41336, 51670, 72338, 82672, 103340, 144676, 180845, 206680, 253183, 289352, 361690, 413360, 506366, 578704, 723380, 1012732, 1265915, 1446760, 2025464, 2531830, 2893520, 4050928, 5063660, 10127320, 20254640]

約数ペア:

[(1, 20254640), (2, 10127320), (4, 5063660), (5, 4050928), (7, 2893520), (8, 2531830), (10, 2025464), (14, 1446760), (16, 1265915), (20, 1012732), (28, 723380), (35, 578704), (40, 506366), (49, 413360), (56, 361690), (70, 289352), (80, 253183), (98, 206680), (112, 180845), (140, 144676), (196, 103340), (245, 82672), (280, 72338), (392, 51670), (490, 41336), (560, 36169), (784, 25835), (980, 20668), (1960, 10334), (3920, 5167)]