399280840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1426003}}^1$

素因数の和:1426021

約数の個数: 32

約数和(自身を含む): 1026722880

約数和(自身を除く): 627442040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1426003, 2852006, 5704012, 7130015, 9982021, 11408024, 14260030, 19964042, 28520060, 39928084, 49910105, 57040120, 79856168, 99820210, 199640420, 399280840]

約数ペア:

[(1, 399280840), (2, 199640420), (4, 99820210), (5, 79856168), (7, 57040120), (8, 49910105), (10, 39928084), (14, 28520060), (20, 19964042), (28, 14260030), (35, 11408024), (40, 9982021), (56, 7130015), (70, 5704012), (140, 2852006), (280, 1426003)]