51504400

素因数分解:

$2^4\times 5^2\times {\mathrm{128761}}^1$

素因数の和:128779

約数の個数: 30

約数和(自身を含む): 123740282

約数和(自身を除く): 72235882

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 128761, 257522, 515044, 643805, 1030088, 1287610, 2060176, 2575220, 3219025, 5150440, 6438050, 10300880, 12876100, 25752200, 51504400]

約数ペア:

[(1, 51504400), (2, 25752200), (4, 12876100), (5, 10300880), (8, 6438050), (10, 5150440), (16, 3219025), (20, 2575220), (25, 2060176), (40, 1287610), (50, 1030088), (80, 643805), (100, 515044), (200, 257522), (400, 128761)]