81071600

素因数分解:

$2^4\times 5^2\times {\mathrm{202679}}^1$

素因数の和:202697

約数の個数: 30

約数和(自身を含む): 194775480

約数和(自身を除く): 113703880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202679, 405358, 810716, 1013395, 1621432, 2026790, 3242864, 4053580, 5066975, 8107160, 10133950, 16214320, 20267900, 40535800, 81071600]

約数ペア:

[(1, 81071600), (2, 40535800), (4, 20267900), (5, 16214320), (8, 10133950), (10, 8107160), (16, 5066975), (20, 4053580), (25, 3242864), (40, 2026790), (50, 1621432), (80, 1013395), (100, 810716), (200, 405358), (400, 202679)]