21256100

素因数分解:

$2^2\times 5^2\times {\mathrm{212561}}^1$

素因数の和:212575

約数の個数: 18

約数和(自身を含む): 46125954

約数和(自身を除く): 24869854

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 212561, 425122, 850244, 1062805, 2125610, 4251220, 5314025, 10628050, 21256100]

約数ペア:

[(1, 21256100), (2, 10628050), (4, 5314025), (5, 4251220), (10, 2125610), (20, 1062805), (25, 850244), (50, 425122), (100, 212561)]