21144400

素因数分解:

$2^4\times 5^2\times {\mathrm{52861}}^1$

素因数の和:52879

約数の個数: 30

約数和(自身を含む): 50800382

約数和(自身を除く): 29655982

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52861, 105722, 211444, 264305, 422888, 528610, 845776, 1057220, 1321525, 2114440, 2643050, 4228880, 5286100, 10572200, 21144400]

約数ペア:

[(1, 21144400), (2, 10572200), (4, 5286100), (5, 4228880), (8, 2643050), (10, 2114440), (16, 1321525), (20, 1057220), (25, 845776), (40, 528610), (50, 422888), (80, 264305), (100, 211444), (200, 105722), (400, 52861)]