21918650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{33721}}^1$

素因数の和:33746

約数の個数: 24

約数和(自身を含む): 43906044

約数和(自身を除く): 21987394

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 33721, 67442, 168605, 337210, 438373, 843025, 876746, 1686050, 2191865, 4383730, 10959325, 21918650]

約数ペア:

[(1, 21918650), (2, 10959325), (5, 4383730), (10, 2191865), (13, 1686050), (25, 876746), (26, 843025), (50, 438373), (65, 337210), (130, 168605), (325, 67442), (650, 33721)]