20003440

素因数分解:

$2^4\times 5^1\times {\mathrm{250043}}^1$

素因数の和:250056

約数の個数: 20

約数和(自身を含む): 46508184

約数和(自身を除く): 26504744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250043, 500086, 1000172, 1250215, 2000344, 2500430, 4000688, 5000860, 10001720, 20003440]

約数ペア:

[(1, 20003440), (2, 10001720), (4, 5000860), (5, 4000688), (8, 2500430), (10, 2000344), (16, 1250215), (20, 1000172), (40, 500086), (80, 250043)]