81011600

素因数分解:

$2^4\times 5^2\times {\mathrm{202529}}^1$

素因数の和:202547

約数の個数: 30

約数和(自身を含む): 194631330

約数和(自身を除く): 113619730

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202529, 405058, 810116, 1012645, 1620232, 2025290, 3240464, 4050580, 5063225, 8101160, 10126450, 16202320, 20252900, 40505800, 81011600]

約数ペア:

[(1, 81011600), (2, 40505800), (4, 20252900), (5, 16202320), (8, 10126450), (10, 8101160), (16, 5063225), (20, 4050580), (25, 3240464), (40, 2025290), (50, 1620232), (80, 1012645), (100, 810116), (200, 405058), (400, 202529)]