90400

素因数分解:

$2^5\times 5^2\times {\mathrm{113}}^1$

素因数の和:133

約数の個数: 36

約数和(自身を含む): 222642

約数和(自身を除く): 132242

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 113, 160, 200, 226, 400, 452, 565, 800, 904, 1130, 1808, 2260, 2825, 3616, 4520, 5650, 9040, 11300, 18080, 22600, 45200, 90400]

約数ペア:

[(1, 90400), (2, 45200), (4, 22600), (5, 18080), (8, 11300), (10, 9040), (16, 5650), (20, 4520), (25, 3616), (32, 2825), (40, 2260), (50, 1808), (80, 1130), (100, 904), (113, 800), (160, 565), (200, 452), (226, 400)]