21257300

素因数分解:

$2^2\times 5^2\times {\mathrm{212573}}^1$

素因数の和:212587

約数の個数: 18

約数和(自身を含む): 46128558

約数和(自身を除く): 24871258

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 212573, 425146, 850292, 1062865, 2125730, 4251460, 5314325, 10628650, 21257300]

約数ペア:

[(1, 21257300), (2, 10628650), (4, 5314325), (5, 4251460), (10, 2125730), (20, 1062865), (25, 850292), (50, 425146), (100, 212573)]