21509228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3257}}^1$

素因数の和:3401

約数の個数: 24

約数和(自身を含む): 40868352

約数和(自身を除く): 19359124

約数列:

[1, 2, 4, 13, 26, 52, 127, 254, 508, 1651, 3257, 3302, 6514, 6604, 13028, 42341, 84682, 169364, 413639, 827278, 1654556, 5377307, 10754614, 21509228]

約数ペア:

[(1, 21509228), (2, 10754614), (4, 5377307), (13, 1654556), (26, 827278), (52, 413639), (127, 169364), (254, 84682), (508, 42341), (1651, 13028), (3257, 6604), (3302, 6514)]