21356982

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{673}}^1$

素因数の和:765

約数の個数: 48

約数和(自身を含む): 48576528

約数和(自身を除く): 27219546

約数列:

[1, 2, 3, 6, 9, 18, 41, 43, 82, 86, 123, 129, 246, 258, 369, 387, 673, 738, 774, 1346, 1763, 2019, 3526, 4038, 5289, 6057, 10578, 12114, 15867, 27593, 28939, 31734, 55186, 57878, 82779, 86817, 165558, 173634, 248337, 260451, 496674, 520902, 1186499, 2372998, 3559497, 7118994, 10678491, 21356982]

約数ペア:

[(1, 21356982), (2, 10678491), (3, 7118994), (6, 3559497), (9, 2372998), (18, 1186499), (41, 520902), (43, 496674), (82, 260451), (86, 248337), (123, 173634), (129, 165558), (246, 86817), (258, 82779), (369, 57878), (387, 55186), (673, 31734), (738, 28939), (774, 27593), (1346, 15867), (1763, 12114), (2019, 10578), (3526, 6057), (4038, 5289)]