31856120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18521}}^1$

素因数の和:18575

約数の個数: 32

約数和(自身を含む): 73347120

約数和(自身を除く): 41491000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18521, 37042, 74084, 92605, 148168, 185210, 370420, 740840, 796403, 1592806, 3185612, 3982015, 6371224, 7964030, 15928060, 31856120]

約数ペア:

[(1, 31856120), (2, 15928060), (4, 7964030), (5, 6371224), (8, 3982015), (10, 3185612), (20, 1592806), (40, 796403), (43, 740840), (86, 370420), (172, 185210), (215, 148168), (344, 92605), (430, 74084), (860, 37042), (1720, 18521)]