21265388

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{1021}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 38459904

約数和(自身を除く): 17194516

約数列:

[1, 2, 4, 41, 82, 127, 164, 254, 508, 1021, 2042, 4084, 5207, 10414, 20828, 41861, 83722, 129667, 167444, 259334, 518668, 5316347, 10632694, 21265388]

約数ペア:

[(1, 21265388), (2, 10632694), (4, 5316347), (41, 518668), (82, 259334), (127, 167444), (164, 129667), (254, 83722), (508, 41861), (1021, 20828), (2042, 10414), (4084, 5207)]