81446800

素因数分解:

$2^4\times 5^2\times {\mathrm{203617}}^1$

素因数の和:203635

約数の個数: 30

約数和(自身を含む): 195676898

約数和(自身を除く): 114230098

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203617, 407234, 814468, 1018085, 1628936, 2036170, 3257872, 4072340, 5090425, 8144680, 10180850, 16289360, 20361700, 40723400, 81446800]

約数ペア:

[(1, 81446800), (2, 40723400), (4, 20361700), (5, 16289360), (8, 10180850), (10, 8144680), (16, 5090425), (20, 4072340), (25, 3257872), (40, 2036170), (50, 1628936), (80, 1018085), (100, 814468), (200, 407234), (400, 203617)]