18961481

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 24339456

約数和(自身を除く): 5377975

約数列:

[1, 7, 11, 49, 77, 127, 277, 539, 889, 1397, 1939, 3047, 6223, 9779, 13573, 21329, 35179, 68453, 149303, 246253, 386969, 1723771, 2708783, 18961481]

約数ペア:

[(1, 18961481), (7, 2708783), (11, 1723771), (49, 386969), (77, 246253), (127, 149303), (277, 68453), (539, 35179), (889, 21329), (1397, 13573), (1939, 9779), (3047, 6223)]